FR3149278A1 - Method and device for controlling a vehicle navigation system - Google Patents

Abstract

The present invention relates to a method and a device for controlling a navigation system for a vehicle (10). For this purpose, data representative of a route are determined by the navigation system as a function of start and end information of a journey to be traveled by the vehicle (10). A vehicle use awareness message (10) is determined as a function of at least one characteristic of the route obtained from the data. The vehicle use awareness message (10) is rendered, for example displayed on a display device (13). Abstract: Figure 1

Description

Method and device for controlling a vehicle navigation system

The present invention relates to methods and devices for controlling a navigation system for a vehicle, in particular but not exclusively for a motor vehicle. The present invention also relates to a method and a device for rendering a vehicle usage recommendation message.

Technological background

The pollution generated by the use of vehicles, particularly private motor vehicles, is diverse and has an impact on the environment and on the quality of life of the population.

Thus, the intensive use of vehicles leads to the emission into the atmosphere of gases and particles that have an impact on the environment. The emission of greenhouse gases contributes to climate change while the emission of particles causes respiratory problems when exposure to these particles is high. The noise associated with the use of vehicles is also a source of noise pollution and causes discomfort for the population, sometimes with an impact on health.

Summary of the present invention

An object of the present invention is to solve at least one of the problems of the technological background described above.

Another object of the present invention is to reduce the pollution generated by a vehicle.

According to a first aspect, the present invention relates to a method of controlling a vehicle navigation system, the method comprising the following steps:
- determination, by the navigation system, of data representative of a route based on information on the start and end of a journey to be covered by the vehicle;
- determination of a vehicle usage awareness message based on at least one characteristic of the route obtained from the data;
- rendering of the vehicle use awareness message.

Such a method makes it possible to generate and render, for example display, a message, for example intended for the driver of the vehicle, to raise awareness of the use of his vehicle, and ultimately of the pollution generated by the use of the vehicle. The message is intended to be adapted to the journey that the driver has planned to make with the vehicle, which makes it possible to adapt the awareness and any recommendations associated with the particular characteristic(s) of the planned route.

According to another variant, the at least one characteristic belongs to a set of characteristics comprising:
- a distance from the route;
- at least one type of environment along the route;
- at least one type of traffic lane on the route; and
- at least one maximum authorized speed.

According to a further variant, the message is selected from a plurality of recorded vehicle usage awareness messages, the selection being a function of the at least one characteristic.

According to another variant, the vehicle use awareness message corresponds to:
- a first awareness message for using the vehicle when the distance of the route is less than a first threshold distance, the content of the first message corresponding to a recommendation to use an alternative mode of transport other than the vehicle to travel the route;
- a second vehicle use awareness message when the route distance is greater than the first threshold distance and less than a second threshold distance and when the environment along the route is of an urban type, a content of the second message corresponding to a recommendation to use public transport instead of the vehicle to travel the route; and
- a third vehicle use awareness message when the route distance is greater than the second threshold distance and when the route includes a type of traffic lane corresponding to a fast lane, a content of the third message corresponding to a recommendation to reduce a vehicle speed to limit the vehicle's energy consumption on the fast lane.

According to an additional variant, the first threshold distance is equal to 5 km and the second threshold distance is equal to 20 km.

In another variation, rendering the vehicle usage awareness message includes displaying the vehicle usage awareness message for a specified duration on a display device.

According to a second aspect, the present invention relates to a device for controlling a vehicle navigation system, the device comprising a memory associated with a processor configured for implementing the steps of the method according to the first aspect of the present invention.

According to a third aspect, the present invention relates to a system comprising a device as described above according to the second aspect of the present invention and a display device communicatively connected to the device as described above according to the second aspect of the present invention.

According to a fourth aspect, the present invention relates to a vehicle, for example of the automobile type, comprising a device as described above according to the second aspect of the present invention or a system as described above according to the third aspect of the present invention.

According to a fifth aspect, the present invention relates to a computer program which comprises instructions adapted for the execution of the steps of the method according to the first aspect of the present invention, in particular when the computer program is executed by at least one processor.

Such a computer program may use any programming language, and may be in the form of source code, object code, or code intermediate between source code and object code, such as in a partially compiled form, or in any other desirable form.

According to a sixth aspect, the present invention relates to a computer-readable recording medium on which is recorded a computer program comprising instructions for carrying out the steps of the method according to the first aspect of the present invention.

On the one hand, the recording medium may be any entity or device capable of storing the program. For example, the medium may include a storage medium, such as a ROM memory, a CD-ROM or a microelectronic circuit type ROM memory, or a magnetic recording medium or a hard disk.

On the other hand, this recording medium may also be a transmissible medium such as an electrical or optical signal, such a signal being able to be conveyed via an electrical or optical cable, by conventional or hertzian radio or by self-directed laser beam or by other means. The computer program according to the present invention may in particular be downloaded from a network such as the Internet.

Alternatively, the recording medium may be an integrated circuit in which the computer program is incorporated, the integrated circuit being adapted to perform or to be used in performing the method in question.

Brief description of the figures

Other characteristics and advantages of the present invention will emerge from the description of the particular and non-limiting exemplary embodiments of the present invention below, with reference to the appended figures 1 to 4, in which:

schematically illustrates a portion of a vehicle passenger compartment, according to a particular exemplary embodiment of the present invention;

schematically illustrates an on-board display device in the vehicle of the , according to a first particular and non-limiting example of embodiment of the present invention;

schematically illustrates a device configured to control a navigation system for the vehicle of the , according to a particular and non-limiting exemplary embodiment of the present invention;

illustrates a flowchart of the different steps of a method of controlling a navigation system for the vehicle of the , according to a particular and non-limiting exemplary embodiment of the present invention.

Description of examples of implementation

A method and device for controlling a vehicle navigation system will now be described in the following with joint reference to FIGS. 1 to 4. Like elements are identified with like reference signs throughout the description which follows.

The terms “first(s)”, “second(s)” (or “first(s)”, “second(s)”), etc. are used in this document by arbitrary convention to allow different elements (such as operations, means, etc.) implemented in the embodiments described below to be identified and distinguished. Such elements may be distinct or correspond to a single and unique element, depending on the embodiment.

According to a particular and non-limiting example of embodiment of the present invention, the control of a vehicle navigation system, for example an on-board navigation system of the vehicle or a navigation system implemented by a mobile communication device embedded in the passenger compartment of the vehicle, comprises the determination, by the navigation system, of data representative of a route for the vehicle as a function of start information and end (or destination) information of the route. These data include in particular data representative of one or more characteristics (or attributes) of the route, such as for example the distance in km, the presence of a fast lane (where the maximum authorized speed is for example equal to 100, 110 or 130 km/h), the type of environment along the route, etc. A vehicle use awareness message is determined or generated as a function of the characteristic(s) of the route obtained from the data, for example to recommend an alternative mode of transport and/or to recommend adapting certain driving parameters to reduce pollution. This message is then rendered, for example displayed and/or rendered by voice synthesis, via ad hoc means of the vehicle and/or the mobile communication device.

There schematically illustrates a portion of the passenger compartment of a vehicle 10, according to a particular and non-limiting exemplary embodiment of the present invention.

The vehicle 10 corresponds for example to a vehicle with a thermal engine, with electric motor(s) or even a hybrid vehicle with a thermal engine and one or more electric motors. The vehicle 10 thus corresponds for example to an automobile, a van, a pickup truck, a motorcycle, a truck, a coach.

The vehicle 10 for example has a display system comprising a display device 13, for example a touchscreen interface, and a computer configured to control the display of content(s) of a graphical HMI on the touchscreen 13. The computer corresponds for example to the computer of the infotainment system, called the IVI (In-Vehicle Infotainment) computer of the vehicle 10. Such a screen 13 is for example arranged in the dashboard of the vehicle 11. Such a display screen 13 corresponds for example to a touchscreen interface and is called a touchscreen. Such a screen is for example of the LCD type (from the English “Liquid Crystal Display”), for example of the TFT type (from the English “Thin-Film Transistor”), or OLED (from the English “Organic Light-Emitting Diode”).

According to one variant, the display system comprises a display screen (not shown) corresponding for example to a transparent or semi-transparent blade, for example arranged on the top of the dashboard 11 in front of the windshield of the electric vehicle 10. Such a screen is for example provided in addition to the screen 13 or in place of the screen 13. The transparent blade is for example arranged behind the steering wheel, according to the point of view of a driver seated in the driver's seat, in such a way that the driver sees the content displayed or projected on the transparent blade when the driver is driving the vehicle 10. The transparent blade 12 thus corresponds to an element of a device or system called a head-up display. Such a display system comprises for example one or more projectors integrated for example in the dashboard 11. Such a system for projecting images or graphic content corresponds for example to a so-called augmented reality system, called AR (from the English “Augmented Reality”), for example a Head-Up Display system, called VTH or HUD (from the English “Head Up Display” or in French “Display Tête Haute”), which allows the embedding of virtual objects in the driver’s field of vision by projecting the images onto the blade, so as to superimpose the virtual objects of the projected images on the real road scene. The projection of the images of the graphic object is for example controlled by one or more computers of the on-board system of the vehicle 10, for example by the IVI computer.

According to one variant, the screen 13 (and optionally the VTH system) complements one or more screens arranged in an area behind the steering wheel.

The vehicle 10 also includes or comprises, for example, one or more loudspeakers arranged in the passenger compartment of the vehicle 10 and configured to render sound content, for example under the control of the IVI computer.

According to a particular embodiment, the vehicle 10 has a navigation and geolocation system, also called a GNSS system (Geolocation and Navigation by a Satellite System), for example a GPS (Global Positioning System) or Galileo type system, such a system comprising or being associated with a GNSS receiver on board the vehicle 10. Such a navigation system is integrated into the vehicle and comprises a graphical Human-Machine Interface (HMI) whose various contents are displayed on a display device of the vehicle 10, for example the screen 13. The HMI of the navigation system comprises various pages or menus to, for example, allow the driver of the vehicle 10, or any other user, to enter, for example, the destination of a journey or route that the driver wishes to take with the vehicle 10, from an initial position corresponding, for example, to the current position of the vehicle 10 or to a location at the start of the route provided by the driver. The HMI also includes an interface for displaying the route on a road map with guidance instructions to follow the route calculated by the navigation system.

According to another embodiment, the navigation system corresponds to a navigation system implemented in the form of a mobile application installed on a mobile communication device 12, corresponding for example to a smartphone or a tablet, such a device 12 comprising a GNSS system receiver for obtaining geographic position information of the device 12. An HMI is also associated with such an implementation, the different contents of the HMI being displayed on the display device or screen of the mobile communication device 12. Such a mobile communication device 12 is for example configured to be connected in wireless communication (via a Bluetooth® or Wifi® link for example) or wired communication (via a USB cable (from the English “Universal Serial Bus” or in French “Universal serial bus” for example) with the vehicle 10. An example of a hardware implementation of such a mobile communication device is described below with regard to the .

The on-board systems of the vehicle 10 (display system, navigation system) are each controlled by one or more computers. These computers, including for example the IVI computer, form for example a multiplexed architecture for the realization of different services useful for the proper functioning of the vehicle and for assisting the driver and/or the passengers of the vehicle in the control of the vehicle 10 via the control of the system(s) embedded in the vehicle 10. The computers communicate and exchange data between themselves via one or more computer buses, for example a communication bus of the CAN data bus type (from the English “Controller Area Network” or in French “Réseau de contrôles”), CAN FD (from the English “Controller Area Network Flexible Data-Rate” or in French “Réseau de contrôles à débit de données flexible”), FlexRay (according to the ISO 17458 standard), LIN (from the English “Local Interconnect Network” or in French “Réseau interconnecté local”) or Ethernet (according to the ISO/IEC 802-3 standard).

A process for controlling a navigation system for the vehicle 10 is implemented by the vehicle 10, for example by one or more processors of one or more computers of the on-board system of the vehicle 10, or by the mobile communication device 12, for example by one or more processors of the device 12.

In a first operation of the process, data representative of a route are determined or calculated by the navigation system (of the vehicle 10 or of the mobile communication device 12) from start and end information of a journey to be traveled with the vehicle 10.

The journey start information corresponds for example to a current position of the vehicle 10 (or of the mobile communication device 12) obtained directly by the system from the GNSS receiver. According to another example, the start information is entered by a user, for example the driver of the vehicle 10, via the HMI of the navigation system, for example via the touch interface of the screen 13 (or of the screen of the mobile communication device 12). This journey start information corresponds according to this example to an address, a point of interest, GPS coordinates, etc.

The end-of-trip information corresponds to the final destination of the trip or route and is, for example, entered or filled in by a user, for example the driver of the vehicle 10, via the HMI of the navigation system, for example via the touch interface of the screen 13 (or the screen of the mobile communication device 12). This end-of-trip information corresponds, for example, to an address, a point of interest, GPS coordinates, etc.

The calculated route data includes data describing a route formed by several road portions or sections to reach the final destination. The route data also includes for each road portion or section a set of characteristics (or attributes) such as the maximum authorized speed, the type of lane or road (for example a dual carriageway or motorway), the number of traffic lanes (for example a road with 1, 2 or 3 lanes of traffic in the same direction of travel), the type of area or environment crossed by the road portion (urban environment, rural environment), the curvature associated with the road portion, the presence of any obstacles, etc.

The data representative of the determined route includes data representative of one or more characteristics such as:
- a route distance, for example expressed in kilometers (km), or even in travel time (in hours, minutes and/or seconds); and/or
- at least one type of environment along the route (e.g. urban, interurban or rural, industrial zone, etc.); and/or
- at least one type of traffic lane on the route (for example, expressway (i.e. a road with 2 or more traffic lanes in the same direction), national, departmental or urban road or lane); and/or
- at least one maximum authorized speed.

The above information or data are for example associated with each portion or section of road forming the route, which makes it possible to determine for some of these characteristics (in particular the type of environment, the type of road/lane and the maximum authorized speed) one or more categories for the route, with an associated percentage for each category. For example, a route may include a part of expressway, a part of departmental road and a part of urban road, each part being expressed as a percentage of the entire route (for example 60% expressways, 30% departmental roads and 10% urban roads). In the same way, the environment associated with the route is composed of several environments each expressed with a percentage of the entire route (for example 80% urban environment and 20% interurban environment).

In a second operation of the process, a vehicle usage awareness message is determined based on one or more of the route characteristics obtained from the route representative data.

The vehicle usage awareness message is for example determined or generated from a set of message generation rules stored in a memory and taking as parameters one or more characteristics of the route (for example the distance and/or the type of environment and/or the type of road and/or the maximum authorized speed).

According to a variant, the determination of the awareness message corresponds to a selection of a message from a plurality of vehicle use awareness messages recorded in a memory of the vehicle 10 (or of the mobile communication device 12), the selection being made according to the characteristic(s) of the route.

The awareness message determined from one or more of the characteristics associated with the calculated route corresponds for example to:
- a first awareness message for using the vehicle when the distance of the route is less than a first threshold distance, which first threshold distance is for example equal to 5 km (or according to other examples equal to 3, 7 or 10 km). The content of such a first message corresponds to a recommendation to use an alternative mode of transport other than the vehicle to travel the route, an alternative mode of transport corresponding for example to walking, to using a bicycle (electric or not), to using a scooter (electric or not), that is to say to any mode of transport not directly emitting greenhouse gases for example. The first message is for example of the type: "For short journeys, favor walking or cycling";
- a second vehicle use awareness message when the route distance is greater than the first threshold distance and less than a second threshold distance and when the environment along the route is of an urban type. The second threshold value is for example equal to 20 km (or according to other examples equal to 15, 17, 25 or 30 km). The criterion relating to the urban type environment is for example fulfilled when the percentage of the urban type along the route is greater than a determined threshold percentage (for example greater than 70 or 80%), that is to say if the environment crossed by the route is of an urban type for more than 70 or 80% over the entire route. The content of the second message corresponds to a recommendation to use public transport (for example train, bus, tram, carpooling service) instead of the vehicle to travel the route. The second message is for example of the type: “For daily journeys, favor public transport and carpooling”; and
- a third vehicle use awareness message when the route distance is greater than the second threshold distance and when the route includes a type of traffic lane corresponding to a fast lane. The criterion relating to fast lane or roads is for example fulfilled when the percentage of fast lane or roads on the route represents a percentage of the total of lanes or roads on the entire route greater than a specific threshold percentage (for example greater than 50, 60, 70 or 80%), i.e. if the route includes more than 50, 60, 70 or 80% of fast lanes. The content of the third message corresponds to a recommendation to reduce the vehicle speed (e.g. 110 or 130 km/h) to limit the vehicle's energy consumption on the fast lane. The third message is intended to encourage the driver to reduce his speed, for example by proposing a speed reduction value (in absolute terms or in relation to a maximum speed permitted on the section of the route with expressways) or without proposing a reduction value with a generic message. The third message is for example of the type: "By reducing your speed, you consume less".

The messages described in the list above are provided for illustration purposes, the message determined to make the driver aware of the use of his vehicle according to the calculated route not being limited to the examples above but extending to any message intended to make recommendations to the driver and encourage the driver to limit the use of his vehicle and/or reduce fuel consumption to reduce the pollution generated during the use of the vehicle 10.

In a fourth operation of the process, the vehicle usage awareness message generated or determined in the third operation is rendered.

The rendering includes for example:
- displaying the message on a display device such as the screen 13 or the screen of the mobile communication device 12; and/or
- the vocal rendering of the message by voice synthesis of the message generated via one or more loudspeakers of the vehicle 10 or of the mobile communication device 12.

Regarding the display of the generated message, the rendering of graphic content comprising the message or corresponding to the message corresponds to a set of operations implemented by a processor for the generation of pixels representative of the content to be displayed on a screen. The generation of pixels comprises for example the determination or calculation of gray levels for each color channel of a determined color system or space such as the RGB space (from the English “Red, Green, Blue”, or in French “Rouge, vert, bleu”).

Such determined content corresponds, for example, to a specific page of an HMI of the navigation system (of the vehicle 10 or of the mobile communication device 12).

There illustrates, according to a particular exemplary embodiment, the result of the rendering of the message via the HMI of the navigation system on a display device 2 corresponding to the screen 13 or to the screen of the mobile communication device 12.

The awareness message is for example displayed in a window 21 of the HMI for a specific duration, for example for 5, 10, 20 or 30 seconds. The display duration corresponds for example to a parameter whose value can be adjusted by a user via a specific page of the HMI.

According to a variant, the awareness message remains displayed in the window 21 until data is received requiring the closing of the window 21 by the computer or the processor implementing the process. This data corresponds for example to data representative of a touch press on a graphic object (for example a virtual button or an icon) displayed in the window and intended to control the closing of the window 21 and/or to acknowledge the taking into account of the message.

The window 21 is for example displayed on a graphic content 22 (i.e. superimposed) corresponding for example to a road map containing a preview of the calculated route. The window 21 occupies a part of the display area of the display device 2, this window 21 corresponding for example to a contextual window, also called an intruder or pop-up window (from the English “pop-up window”).

According to an alternative embodiment, the message is displayed in the window 21 before the display of the preview of the route, the display of the route and the start of guidance by the navigation system being, for example, triggered automatically when the window 21 is closed (automatic closing upon expiry of a period of determined duration or manual closing upon receipt of the data requiring closing).

The process continues, for example, with a display and/or sound rendering of guidance instructions so that the driver of the vehicle 10 follows the calculated route.

Alternatively, when the driver ultimately decides not to use his vehicle to make the journey corresponding to the route calculated following the rendering of the awareness message, the process ends.

There schematically illustrates a device 3 configured for controlling a navigation system for a vehicle, for example for the vehicle 10, according to a particular and non-limiting exemplary embodiment of the present invention. The device 3 corresponds for example to a device embedded in the vehicle 10, for example a computer. According to another example, the device 3 corresponds to a mobile communication device such as the device 12.

The device 3 is for example configured for the implementation of the operations described with regard to figures 1 and 2 and/or the steps of the method described with regard to the . Examples of such a device 3 include, but are not limited to, on-board electronic equipment such as an on-board computer of a vehicle, an electronic calculator such as an ECU (“Electronic Control Unit”), a smartphone, a tablet, a laptop. The elements of the device 3, individually or in combination, can be integrated in a single integrated circuit, in several integrated circuits, and/or in discrete components. The device 3 can be realized in the form of electronic circuits or software (or computer) modules or even a combination of electronic circuits and software modules.

The device 3 comprises one (or more) processor(s) 30 configured to execute instructions for carrying out the steps of the method and/or for executing the instructions of the software(s) embedded in the device 3. The processor 30 may include integrated memory, an input/output interface, and various circuits known to those skilled in the art. The device 3 further comprises at least one memory 31 corresponding for example to a volatile and/or non-volatile memory and/or comprises a memory storage device which may comprise volatile and/or non-volatile memory, such as EEPROM, ROM, PROM, RAM, DRAM, SRAM, flash, magnetic or optical disk.

The computer code of the embedded software(s) comprising the instructions to be loaded and executed by the processor is for example stored in the memory 31.

According to various particular and non-limiting exemplary embodiments, the device 3 is coupled in communication with other similar devices or systems and/or with communication devices, for example a TCU (from the English “Telematic Control Unit” or in French “Telematic Control Unit”), for example via a communication bus or through dedicated input/output ports.

According to a particular and non-limiting exemplary embodiment, the device 3 comprises a block 32 of interface elements for communicating with external devices. The interface elements of the block 32 comprise one or more of the following interfaces:
- RF radio frequency interface, for example of the Wi-Fi® type (according to IEEE 802.11), for example in the 2.4 or 5 GHz frequency bands, or of the Bluetooth® type (according to IEEE 802.15.1), in the 2.4 GHz frequency band, or of the Sigfox type using UBN (Ultra Narrow Band) radio technology, or LoRa in the 868 MHz frequency band, LTE (Long-Term Evolution), LTE-Advanced;
- USB interface (from the English “Universal Serial Bus” or “Universal Serial Bus” in French);
- HDMI interface (from the English “High Definition Multimedia Interface”);
- LIN interface (from the English “Local Interconnect Network”).

According to another particular and non-limiting exemplary embodiment, the device 3 comprises a communication interface 33 which makes it possible to establish communication with other devices (such as other computers of the on-board system) via a communication channel 330. The communication interface 33 corresponds for example to a transmitter configured to transmit and receive information and/or data via the communication channel 330. The communication interface 33 corresponds for example to a wired network of the CAN (Controller Area Network), CAN FD (Controller Area Network Flexible Data-Rate), FlexRay (standardized by the ISO 17458 standard) or Ethernet (standardized by the ISO/IEC 802-3 standard).

According to a particular and non-limiting exemplary embodiment, the device 3 can provide output signals to one or more external devices, such as a display screen 340, touch-sensitive or not, one or more speakers 350 and/or other peripherals 360 (projection system) via output interfaces 34, 35 and 36 respectively. According to a variant, one or other of the external devices is integrated into the device 3.

There illustrates a flowchart of the different steps of a method for controlling a vehicle navigation system, for example for the vehicle 10, according to a particular and non-limiting exemplary embodiment of the present invention. The method is for example implemented by a device embedded in the vehicle 10 (for example a computer or a set of computers, or by one or more processors of a mobile communication device 12) or by the device 3 of the .

In a first step 41, data representative of a route are determined or calculated by the navigation system based on information on the start and end of a journey to be covered by the vehicle.

In a second step 42, a vehicle usage awareness message is determined based on at least one characteristic of the route obtained from the data.

In a third step 43, the vehicle usage awareness message is rendered.

Alternatively, the variants and examples of the operations described in relation to one of Figures 1 and 2 apply to the steps of the method of the .

Of course, the present invention is not limited to the exemplary embodiments described above but extends to a method for displaying a determined content of an HMI for controlling a vehicle navigation system that would include secondary steps without departing from the scope of the present invention. The same would apply to a device configured for implementing such a method.

The present invention also relates to a vehicle, for example an automobile or more generally a land motor vehicle, comprising the device 3 of the .

Claims (10)

A method of controlling a vehicle navigation system (10), said method comprising the following steps:
- determination (41), by said navigation system, of data representative of a route as a function of information on the start and end of a journey to be covered by said vehicle (10);
- determination (42) of an awareness message for the use of said vehicle (10) as a function of at least one characteristic of said route obtained from said data;
- display control of said awareness message for the use of said vehicle via a graphical human-machine interface of said navigation system displayed on a display device. Method according to claim 1, wherein said at least one characteristic belongs to a set of characteristics comprising:
- a distance from said route;
- at least one type of environment along said route;
- at least one type of traffic lane on said route; and
- at least one maximum authorized speed. Method according to one of claims 1 to 2, for which said awareness message for use of said vehicle (10) is selected from a plurality of awareness messages for use of said vehicle recorded, the selection being a function of said at least one characteristic. Method according to claims 2 and 3, for which the awareness message for using said vehicle corresponds to:
- a first awareness message for using the vehicle when the distance of said route is less than a first threshold distance, a content of said first message corresponding to a recommendation to use an alternative mode of transport other than said vehicle (10) to travel said route;
- a second vehicle use awareness message when the distance of said route is greater than the first threshold distance and less than a second threshold distance and when said environment along said route is of an urban type, a content of said second message corresponding to a recommendation to use public transport instead of said vehicle (10) to travel said route; and
- a third vehicle use awareness message when the distance of said route is greater than the second threshold distance and when said route includes a type of traffic lane corresponding to a fast lane, a content of said third message corresponding to a recommendation to reduce a speed of said vehicle (10) to limit an energy consumption of said vehicle (10). The method of claim 4, wherein said first threshold distance is equal to 5 km and said second threshold distance is equal to 20 km. Method according to one of claims 1 to 5, for which the display control of said awareness message for use of said vehicle comprises a display of said awareness message for use (21) of said vehicle (10) for a determined duration on said display device. Computer program comprising instructions for implementing the method according to any one of the preceding claims, when these instructions are executed by a processor. Device (3) for controlling a vehicle navigation system, said device (3) comprising a memory (31) associated with at least one processor (30) configured for implementing the steps of the method according to any one of claims 1 to 6. System comprising the device (3) according to claim 8 and a display device (2) communicatively connected to said device (3). Vehicle (10) comprising the device (3) according to claim 8 or the system according to claim 9.