FR3069503B1 - INTERIOR LIGHTING SYSTEM FOR VEHICLE CAPABLE OF ADOPTING SELF-CONTAINED DRIVING AND METHOD OF CONTROLLING THE SAME - Google Patents

Abstract

According to the invention, a method of controlling an interior lighting system (12) for a vehicle (10) adapted to adopt an autonomous driving mode, comprises the steps of: a) determining a confidence level of the driving in autonomous mode, the confidence level indicating a capability of the vehicle to progress safely on a road (14) in autonomous driving mode; b) compare the confidence level to at least one determined confidence level; c) controlling the lighting system (12) according to the result of step b) so as to inform the passenger (s) of the vehicle (10) the level of confidence in progress.

Description

Interior lighting system for a vehicle capable of adopting autonomous driving and method of controlling the same

TECHNICAL AREA

The present invention relates to a lighting system for a vehicle capable of adopting autonomous driving and more particularly to its control method for informing a passenger of the vehicle of the level of confidence of the autonomous driving mode.

BACKGROUND OF THE INVENTION

Autonomous vehicles are vehicles capable of adopting an autonomous driving mode using, in particular, road information provided by sensors enabling it to progress on a road. When the sensors fail, or when the traffic information is corrupt, or simply when the road conditions no longer allow the autonomous vehicle to be able to move safely on the road network, the vehicle must inform the passenger of the vehicle in order to remedy the situation.

The multiple diagnostics and feedback devices in a stand-alone vehicle are generally complex and do not allow the driver or the passenger to make a quick and effective decision to overcome an autonomous vehicle's inability to progress safely. on the road.

It is therefore important to propose a new solution solving these problems.

SUMMARY OF THE INVENTION

According to a first embodiment, a method of controlling an interior lighting system for a vehicle capable of adopting an autonomous driving mode comprises the steps of: a) determining a confidence level of the driving in autonomous mode, the level a confidence indicating a vehicle's ability to safely progress on a road in an autonomous driving mode; b) compare the confidence level to at least one determined confidence level; c) controlling the lighting system according to the result of step b) so as to inform the passenger (s) of the vehicle of the level of confidence in progress.

More particularly, step c) may comprise steps of: cl) controlling the lighting system to produce a light beam of a first color if the confidence level is higher than the determined confidence threshold informing the passenger of the vehicle of the absence of an event affecting the vehicle's ability to progress safely on the road; c2) controlling the lighting system to produce a second color light beam if the confidence level is below the determined confidence threshold informing the passenger of the vehicle of the presence of an event impairing the ability of the vehicle to progress in safely on the road.

Optionally, step c) may also comprise a step of: c3) controlling the lighting system to produce a light beam of a third color if the confidence level is between a moderate confidence threshold and a threshold high confidence informing the passenger of the vehicle of the presence of an event that may affect the ability of the vehicle to progress safely on the road.

The control method may also include a step of: d) controlling the lighting system to flash the light beam if the confidence level is below the determined confidence threshold.

The control method may also include a step of: e) delivering a message inviting the passenger to take action on the vehicle 10 if the confidence level (NC) is below the determined confidence level (SC).

In a particular embodiment, for which the lighting system comprises a plurality of light strips arranged in several distinct zones of the perimeter of the passenger compartment of the vehicle, the distinct zones of the perimeter of the passenger compartment corresponding to several distinct zones of the passenger compartment. vehicle environment; step a) of the control method may comprise step a1) of determining the level of confidence for each zone distinct from the environment of the vehicle.

In addition, according to this particular embodiment, step b) of the control method may comprise step b4) of controlling the light strip arranged in the zone around the perimeter of the passenger compartment corresponding to the distinct zone of the passenger compartment. environment according to which the confidence level is below the confidence threshold determined for producing a light beam of a different color from the other light strips so as to inform the passenger of the vehicle on the location of the area distinct from the environment of the vehicle where the confidence level of autonomous driving is below the high confidence level.

Also, according to this particular embodiment, the control method may comprise the step of: f) controlling the lighting system to flash said light strip arranged in the zone of the perimeter of the passenger compartment corresponding to the distinct zone of the environment according to which the level of confidence is below the determined confidence level.

According to the invention, an interior lighting system for a vehicle capable of adopting an autonomous driving mode comprises a control device configured to determine a confidence level of the driving in autonomous mode, the level of confidence indicating a capacity of the vehicle to progress safely on a road in autonomous driving mode. The control device is configured to control a plurality of light strips to produce light beams of a color determined according to the confidence level of the self-driving mode so as to inform the vehicle passenger (s) of the level of confidence in the vehicle. Classes.

According to the invention, a vehicle capable of adopting an autonomous driving comprises a device for monitoring the environment of the vehicle, a control computer for driving in autonomous mode connected to the monitoring device; the stand-alone driving control computer comprising a control device configured to determine a confidence level of the driving in autonomous mode and to control a plurality of light bands to produce light beams of a color determined according to the level confidence in the autonomous mode of driving so as to inform the passenger (s) of the vehicle of the level of confidence in progress.

BRIEF DESCRIPTION OF THE DRAWINGS Other features, objects and advantages of the invention will appear on reading the detailed description which follows, and with reference to the appended drawings, given by way of non-limiting example and in which:

Figure 1 is a schematic representation of a vehicle adapted to adopt an autonomous driving mode equipped with the lighting device according to a first embodiment of the invention;

Figure 2 is a schematic representation of the vehicle of Figure 1 in a situation for which the vehicle is unable to progress safely in autonomous driving mode.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

According to Figure 1, a vehicle 10 adapted to adopt an autonomous driving is shown flowing on a road 14 in a forward direction along a direction D along a longitudinal axis L.

The vehicle 10 includes an interior lighting system 12 which may be part of a room lighting system.

The lighting system 12 comprises a control device 16 which makes it possible in particular to control the colors of the light beams 19, 21, 23, 25, 27, 29, 31, 33 of a plurality of light strips 18, 20, 22, 24 , 26, 28, 30, 32. The color of a light beam 31 may vary according to the control device control 16. The control device 16 is generally an electronic subassembly embedded in a control computer driving mode 17. In particular, the control device 16 could be an independent electronic module. Without limitation, the control device 16 acts as a smart switch for turning on, off, flashing and also choosing the color of the light beams 19, 21, 23, 25, 27, 29, 31, 33 of the plurality of light strips 18, 20, 22, 24, 26, 28, 30, 32.

The lighting system 12 comprises a monitoring device 34 of the environment of the vehicle 10 in particular for monitoring the road conditions in which the vehicle 10 progresses. The monitoring device 34 is obviously not dedicated exclusively to the lighting system 12. The monitoring system 34 is generally dedicated to the autonomous driving mode. The monitoring system 34 plays a major role, for example, in controlling the speed of the vehicle 10 and in the trajectory of the vehicle 10.

Without limitation, the monitoring device 34 may comprise individually or in combination with one another, one or more radar devices, one or more cameras, a location device such as a satellite positioning device. (GPS) or a communication device between the vehicle 10 and the infrastructure of the road network (V2I). The monitoring device 34 also makes it possible to share the environment of the vehicle 10 under surveillance in several distinct zones. As illustrated in FIG. 1, and in a nonlimiting manner, the environment of the vehicle 10 is divided into eight distinct zones under surveillance: the front zone ZAV of the vehicle 10, the left front zone ZAVG of the vehicle 10, the lateral zone left ZLG of the vehicle 10, the rear left zone ZARG of the vehicle, the rear zone ZAR of the vehicle 10, the rear right zone ZARD of the vehicle 10, the right lateral zone ZLD of the vehicle 10 and the front right zone ZAVD of the vehicle 10.

The stand-alone driving control computer 17 is connected to the monitoring device 34, allowing the control device 16 to determine the capacity of the vehicle 10 to progress safely on the road 14 in the autonomous driving mode. The capacity of the vehicle 10 to progress safely on the road 14 in the autonomous driving mode is classified by the control device 16 according to a confidence level NC of the driving in autonomous mode. The capacity of the vehicle 10 to progress safely on the road 14, ie the NC confidence level of the autonomous mode driving, can also be evaluated for each separate zone under ZAV, ZAVG, ZLG surveillance. ZARG, ZAR, ZARD, ZLD, ZAVD so as to allow a location of the presence of an event affecting the capacity of the vehicle 10 to progress safely on the road 14.

In other words, a confidence level before NCAV can be assigned to the zone before ZAV, a left-front confidence level NCAVG can be assigned to the left-front zone ZAVG, a left-lateral confidence level NCLG can be assigned to the left-lateral zone ZALG, a NCARG left rear confidence level can be assigned to the ZARG left rear zone, a NCAR backward confidence level can be assigned to the ZAR backward zone, a NCARD right rear confidence level can be assigned to the ZARD right rear zone , a right lateral trust level NCLD can be assigned to the right lateral zone ZLD and finally a right front confidence level NCAVD can be assigned to the right front zone ZAVD.

Each NCAV, NCAVG, NCLG, NCARG, NCAR, NCARD, NCLD, NCAVD confidence level assessed shall also be dependent on the trajectory of the vehicle 10. For example, and without limitation any event occurring in the rear area under ZAR surveillance and not preventing the vehicle 10 from advancing on the road 14 forward in direction D in autonomous driving mode, can result in a high NCAR confidence level for said rear zone under ZAR monitoring.

The plurality of light strips 18, 20, 22, 24, 26, 28, 30, 32 are arranged in several distinct zones around the perimeter 48 of the passenger compartment of the vehicle 10, the distinct zones of the perimeter 48 of the passenger compartment corresponding to the zones ZAV, ZAVG, ZLG, ZARG, ZAR, ZARD, ZLD, ZAVD of the vehicle environment 10. As an example and in a nonlimiting manner, according to FIG. 1, a front light strip 18 is arranged transversely on the dashboard 36, the front light strip 18 corresponding to the front zone under ZAV monitoring. A right front strip 32, corresponding to the front right zone under ZAVD surveillance, comprises a first portion arranged at the front right end of the dashboard 36 and a second portion arranged approximately on the inner rim of the right front door 38, that is to say at the junction between the right front door 38 and the bottom of its window. A right side strip 30, corresponding to the right side zone under surveillance ZLD, is arranged in part on the inner rim of the right front door 38. The other part is arranged on the inner rim of the right rear door 40. The headband right side 30 is therefore split into two parts, not in any way impeding the opening of the doors 38, 40. A right rear band 28, corresponding to the right rear zone under ZARD surveillance, comprises a portion arranged approximately on the inner edge of the door. rear right door 40 and another portion arranged approximately at the right rear end of the rear shelf 42 of the vehicle 10. The right rear headband 28 is thus divided into two portions, in no way impeding the opening of the right rear door 40 A rear strip 26 is arranged transversely on the rear shelf 42, the rear light strip 26 corresponding to the rear zone under the control. ZAR. A left rear strip 24 corresponding to the left rear zone under ZARG surveillance comprises a portion arranged approximately at the left rear end of the rear deck 42 of the vehicle 10 and another portion arranged approximately on the inside rim of the left rear door 44 of the vehicle 10. The left rear headband 24 is divided into two portions, in no way impeding the opening of the left rear door 44. A left side strip 22, corresponding to the left side zone under surveillance ZLG, is arranged in part on the inner rim of the left rear door 44. The other part is arranged on the inner edge of the left front door 46. The left side strip 22 is split into two parts, in no way impeding the opening of the doors 44 , 46. A left front band 20, corresponding to the front left zone under ZAVG monitoring, comprises a first portion arranged approximately on the inside edge of the left front door 46 and a second portion arranged at the front left end of the dashboard 36.

Preferably, the light strips 18, 20, 22, 24, 26, 28, 30, 32 are arranged aligned one after the other so as to cover the entire periphery 48 of the passenger compartment. The invention is not limited to this type of arrangement of light strips 18, 20, 22, 24, 26, 28, 30, 32 in the passenger compartment of the vehicle 10. Other arrangements are possible. For example, the possibility of arranging light strips on the amounts of the vehicle 10 commonly called amount-A, amount-B, amount-C or, according to the Anglo-Saxon terms "A-pillar, B-pillar, C -pillar ". The amounts of the vehicle may also correspond to separate zones under environmental surveillance of the vehicle 10. The invention lies notably in the fact of associating the confidence level NC with the color of the light beams 19, 21, 23, 25 , 27, 29, 31, 33 of the plurality of light strips 18, 20, 22, 24, 26, 28, 30, 32. The light strips 18, 20, 22, 24, 26, 28, 30, 32 therefore have a role informative in that they allow a passenger of the vehicle 10 to have a status on the confidence level NC of the autonomous driving, that is to say on the capacity of the vehicle 10 to progress safely on a road 14 in autonomous driving mode.

The control device 16 thus makes it possible to control the lighting system 12 to produce a light beam 19 of a color determined according to the confidence level NC of the autonomous driving so as to inform the passenger (s) of the vehicle 10 of the level NC trusted. By way of example and in a nonlimiting manner, the light strips 18, 20, 22, 24, 26, 28, 30, 32 may comprise a plurality of light-emitting diodes of the 'green-blue red' type so that the color of the light beams 19, 21, 23, 25, 27, 29, 31, 33 can be configured in a multitude of different shades according to the control signal which is applied to the light strips 18, 20, 22, 24, 26, 28, 30, 32 .

When the confidence level NC is greater than or equal to a determined confidence threshold SC, a first color, for example the green color, is assigned to the light beams 19, 21, 23, 25, 27, 29, 31, 33 of the strips 18, 20, 22, 24, 26, 28, 30, 32. A confidence level greater than or equal to the determined confidence threshold SC means an absence of an event affecting the vehicle's ability to progress safely on the road. 14. In other words, this means that the road conditions, ie the direct environment of the vehicle defined by the separate zones under surveillance ZAV, ZAVG, ZLG, ZARG, ZAR, ZARD, ZLD, ZAVD , does not include events for which driving in autonomous mode would not act safely. By way of non-limiting example, a road infrastructure compatible with the autonomous driving mode, including obstacles recognized by the autonomous vehicle, such as other vehicles or also pedestrians, should in no way affect the capacity of the vehicle 10 to progress safely in autonomous driving.

On the other hand, when the confidence level NC is lower than a determined confidence threshold SC, a second color, for example the red color, is assigned to the light beams 19, 21, 23, 25, 27, 29, 31, 33 of the light strips 18, 20, 22, 24, 26, 28, 30, 32. A confidence level NC below the determined confidence threshold SC means the presence of an event affecting the capacity of the vehicle 10 to progress safely on the road 14.

Preferably, this situation is an invitation to the passenger to take action on the vehicle 10 so that it can continue to progress safely. It is possible for example, without limitation, to provide a display device 50 in the vehicle 10 on which a message inviting the passenger to take action on the vehicle 10 such as to adopt a manual control of the vehicle 10 or to program a different route is displayed. By way of nonlimiting example, a road infrastructure not compatible with the autonomous driving mode of the vehicle 10, that is to say for example, a road 14 having no signal recognized by the autonomous vehicle 10 as a dirt road (no white lines, no signposts), could cause the inability of the vehicle 10 to progress safely into autonomous driving mode. The inability of the vehicle 10 to progress safely in autonomous driving mode may also come from the failure of a detection member of the monitoring device 34 road conditions, such as a radar or a camera.

Optionally, the determined confidence threshold SC can be replaced by two thresholds, that is to say a high confidence threshold SCE and a moderate confidence threshold SCM. A confidence level NC greater than or equal to the high confidence threshold SCE means an absence of an event that adversely affects the vehicle's ability to progress safely on the road 14. An NC confidence level less than or equal to a moderate confidence level SCM means the presence of an event impairing the ability of the vehicle 10 to progress safely on the road 14.

When the confidence level NC is between the moderate confidence threshold SCM and the high confidence threshold SCE, a third color, for example the orange color, is assigned to the light beams 19, 21, 23, 25, 27, 29, 31, 33. A confidence level NC between the moderate confidence threshold SCM and the high confidence threshold SCE means the presence of an event that can alter the capacity of the vehicle 10 to progress safely on the road 14.

Preferably, this situation is an invitation to the passenger to be vigilant and therefore be ready to take action on the vehicle 10 so as to continue to progress safely. It is possible for example, without limitation, to provide that the display device 50 of the vehicle 10 displays a message inviting the passenger to be possibly ready to adopt a manual driving mode of the vehicle 10 or to program a different route.

This level of confidence NC, said intermediate level of confidence NCi, is generally a level of transient confidence. In other words, this intermediate level of confidence NCi may serve, without limitation, to invite the passenger of the vehicle 10 to perform a manual operation, such as a change of route, to prevent the autonomous vehicle 10 to switch below the SCM moderate confidence level.

Optionally, the control device 16 can control the light strips 18, 20, 22, 24, 26, 28, 30, 32 to flash the light beams 19, 21, 23, 25, 27, 29, 31, 33 if the confidence level is below the determined confidence level SC. The blinking speed can also be established by the control device 16 so as to adapt it to the confidence level NC. The invention also lies in the possibility of informing the passenger about the location of an event affecting the capacity of the vehicle 10 to progress safely on the road 14.

The capacity of the vehicle 10 to progress safely can also be evaluated for each separate zone under ZAV, ZAVG, ZLG, ZARG, ZAR, ZARD, ZLD, ZAVD surveillance, the control device 16 can control the light strip 18 arranged in the zone around the perimeter 48 of the passenger compartment corresponding to the separate zone under ZAV surveillance according to which the confidence level NCAV is below the determined confidence threshold SC to produce a light beam 19 of a color distinct from the other light strips 20, 22, 24, 26, 28, 30, 32 so as to inform the passenger of the vehicle 10 on the location of the monitored zone Z AV of the environment of the vehicle 10 for which the level of confidence NC AV of the autonomous driving is lower than the determined confidence threshold SC.

Optionally, the control device 16 can control the light strip 18 corresponding to the monitored area Z AV for which the confidence level NCAV is lower than the determined confidence threshold SC to flash the light beam 19 of said strip 18 corresponding to the zone under ZAV surveillance for which an event altering or capable of altering the autonomous driving mode has been detected. Also, the blink rate may vary depending on the confidence level.

According to Figure 2, a concrete example illustrating a situation for which the vehicle 10 is no longer able to progress on the road 10 safely in autonomous driving mode is shown. The vehicle travels forward in a predetermined direction D. According to this nonlimiting example, an unforeseen fact, such as a stone landslide, left on the road 14 on which the vehicle 10 moves a pile of stones 52. The monitoring device 34 detects in the left front zone AVG of the environment of the vehicle under surveillance an abnormal event, that is to say the pile of stones 52. The pile of stones 52 being so important that the vehicle 10 is unable to avoid piling up of stone 52 without leaving the markings recognized by the vehicle 10 and formed by the two edges 54, 56 of the road 14. The control device 16 therefore assesses the situation as a failure of the vehicle 10 to progress safely in driving mode autonomous on this journey. Since the event modifies the capacity of the vehicle 10 to progress safely on the road being detected in the left front zone ZAVG of the vehicle 10, the control device 16 will therefore assign to this zone a left-front confidence level NCAVG below the threshold determined trust SC. Therefore, the control device 16 will control the separate light strips 18, 22, 24, 26, 28, 30, 32 of the left front light strip 20 to produce light beams 19, 23, 25, 27, 29 , 31, 33 of red color, while the left front light strip 18 may for example be controlled so as to produce a blue light beam 19 which can blink blue.

It is then possible to provide that the passenger compartment of the vehicle is equipped with a display 50 delivering a message inviting a passenger to change the predetermined route by allowing the vehicle 10 to make a U-turn, or to invite the passenger to adopt manual driving if the vehicle 10 can safely exit the markings of the road 14 so as to avoid the pile of stones 52.

According to one embodiment of the invention, a method for controlling the interior lighting system 12 for the vehicle 10 capable of adopting an autonomous driving mode, comprises a step of determining a level of confidence NC of the autonomous driving , the confidence level NC indicating a capacity of the vehicle 10 to progress safely on a road in autonomous driving mode.

In order to inform the passenger of the autonomous vehicle 10 of the current level of confidence NC, a step of controlling the lighting system 12 according to a comparison between the determined confidence level NC and a determined confidence threshold SC is carried out .

In particular, the control step may comprise a control step of the lighting system 12 making it possible to produce a light beam 19 of a first color if the confidence level NC is greater than a determined confidence threshold SC informing the passenger of the vehicle 10 of the absence of event impairing the ability of the vehicle 10 to progress safely on the road 14, and a control step of the lighting system 12 to produce a light beam 19 of a second color if the level The confidence level NC is below the determined confidence threshold SC informing the passenger of the vehicle 10 of the presence of an event affecting the capacity of the vehicle 10 to progress safely on the road 14.

Optionally and in order to anticipate the situation in which the vehicle 10 is unable to progress safely on the road 14, the determined confidence threshold SC is replaced by a moderate confidence level SCM and a high confidence threshold. SCE. so that when the confidence level NC is between the moderate confidence threshold SCM and the high confidence threshold SCE, a step consists in controlling the lighting system 12 to produce a light beam 21 of a third color informing the vehicle passenger 10 of the presence of an event that may affect the capacity of the vehicle 10 to progress safely on the road 14.

In order to attract the best attention of the passenger when the confidence level NC of the driving in autonomous mode falls below the determined confidence threshold SC, that is to say when the vehicle 10 detects the presence of an event altering the ability of the vehicle 10 to progress safely on the road 14, a step is to flash the light beam 21. This blinking can be continuous as the NC confidence level is below the high confidence threshold SCE. This blinking can also be limited in time, ie last a few seconds or minutes.

The flashing speed can also be adjusted according to the determined NC confidence level.

It is also conceivable to include a step of delivering a message inviting the passenger to take action on the vehicle 10 if the confidence level NC is below the determined confidence level SC.

When the lighting system 12 comprises a plurality of light strips 18, 20, 22, 24, 26, 28, 30, 32 arranged in several distinct zones of the perimeter 48 of the passenger compartment of the vehicle 10, the distinct zones of the periphery 48 of the passenger compartment corresponding to several separate zones under ZAV, ZAVG, ZLG, ZARG, ZAR, ZARD, ZLD, ZAVD surveillance of the environment of the vehicle 10, and in order to inform the passenger of the vehicle 10 of the location of a ZAVG monitored area of the vehicle environment 10 for which the control device 16 coupled to the monitoring device 34 has identified an event that may alter or impair the ability of the vehicle to progress safely on the road 14, the method may include a NCAVG confidence level determination step for each separate ZAVG surveillance zone of the vehicle environment 10.

The method may also include a step of controlling the light strip 20 arranged in the area of the perimeter 48 of the passenger compartment corresponding to the separate zone under ZAVG monitoring for which the NCAVG confidence level is below the determined confidence level SC.

The control may consist in producing a light beam 21 of a color different from the other light strips 18, 22, 24, 26, 28, 30, 32 so as to inform the passenger of the vehicle 10 on the location of said area under surveillance ZAVG .

It is possible to add a step of flashing the light strip 21 arranged in the area around the perimeter 48 of the passenger compartment corresponding to the separate zone under surveillance ZAVG according to which the confidence level NCAVG is below the determined confidence level SC .

Claims (4)

A method of controlling an interior lighting system (12) for a vehicle (10) adapted to adopt an autonomous driving mode, comprising the steps of: a) determining a confidence level (NC) of the driving mode autonomous, the confidence level (NC) indicating a vehicle capacity (10) to progress safely on a road (14) in autonomous driving mode; b) compare the confidence level (NC) to at least one determined confidence level (SC); c) controlling the lighting system (12) according to the result of step b) so as to inform the passenger (s) of the vehicle (10) the current level of confidence (NC); characterized in that the lighting system (12) comprises a plurality of light strips (18, 20, 22, 24, 26, 28, 30, 32) arranged in a plurality of distinct areas of the periphery (48) of the passenger compartment of the vehicle. vehicle (10), the distinct areas of the perimeter (48) of the passenger compartment corresponding to several distinct areas (ZAV, ZAVG, ZLG, ZARG, ZAR, ZARD, ZLD, ZAVD) of the vehicle environment (10); step a) comprises step a1) determining the confidence level (NCAV, NCAVG, NCLG, NCARG, NCAR, NCARD, NCLD, NCAVD) for each distinct zone (ZAV, ZAVG, ZLG, ZARG, ZAR, ZARD). , ZLD, ZAVD) of the vehicle environment (10); step b) comprises step b4) of controlling the light strip (20) arranged in the area of the perimeter (48) of the passenger compartment corresponding to the distinct zone (ZAVG) of the environment according to which the level of confidence (NCAVG) is below the determined confidence threshold (SC) to produce a light beam (21) of a color distinct from the other light bands (18, 22, 24, 26, 28, 30, 32) so as to inform the vehicle passenger (10) on the separate area location (ZAVG) of the vehicle environment for which the confidence level (NCAVG) of the autonomous mode driving is below the high confidence level (SCE); and in that the method comprises a step of f) controlling the lighting system (12) to flash said light strip (20) arranged in the perimeter area (48) of the passenger compartment corresponding to the distinct area ( ZAVG) of the environment according to which the level of confidence (NCAVG) is below the determined confidence level (SC). 2. Control method according to the preceding claim wherein step c) comprises the steps of: cl) controlling the lighting system (12) to produce a light beam (21) of a first color if the level of confidence (NC) is above the determined confidence threshold (SC) informing the passenger of the vehicle (10) of the absence of an event (52) altering the vehicle's capacity (10) to progress safely on the road (14) ; c2) controlling the lighting system (12) to produce a light beam (21) of a second color if the confidence level (NC) is below the determined confidence threshold (SC) informing the passenger of the vehicle (10) the presence of an event (52) altering the ability of the vehicle (10) to progress safely on the road (14). A control method according to any one of the preceding claims wherein the method also comprises a step of: e) delivering a message inviting the passenger to take action on the vehicle (10) if the confidence level (NC) is below the determined confidence level (SC). A vehicle (10) adapted to adopt an autonomous driving mode comprising: a monitoring device (34) of the vehicle environment (10); a stand-alone driving control computer (17) connected to the monitoring device (34); the stand-alone driving control computer (17) comprises a control device (16) configured to determine a confidence level (NC) of the stand-alone driving and to control a plurality of light strips (18, 22, 24, 26, 28, 30, 32) for producing light beams (19, 21, 23, 25, 27, 29, 31, 33) of a color determined according to the confidence level (NC) of the autonomous mode for informing the passenger (s) of the vehicle (10) of the current level of confidence (NC); characterized in that the lighting system (12) comprises a plurality of light strips (18, 20, 22, 24, 26, 28, 30, 32) arranged in a plurality of distinct areas of the periphery (48) of the passenger compartment of the vehicle (10), the distinct areas of the perimeter (48) of the passenger compartment corresponding to several distinct areas (ZAV, ZAVG, ZLG, ZARG, ZAR, ZARD, ZLD, ZAVD) of the vehicle environment (10); the control device (16) is configured to determine the confidence level (NCAV, NCAVG, NCLG, NCARG, NCAR, NCARD, NCLD, NCAVD) for each distinct zone (ZAV, ZAVG, ZLG, ZARG, ZAR, ZARD, ZLD, ZAVD) of the vehicle environment (10); the control device (16) is configured to control the light strip (20) arranged in the perimeter area (48) of the passenger compartment corresponding to the distinct zone (ZAVG) of the environment according to which the level of confidence (NCAVG ) is less than the determined confidence threshold (SC) to produce a light beam (21) of a color distinct from the other light strips (18, 22, 24, 26, 28, 30, 32) so as to inform the passenger of the vehicle (10) on the separate zone location (ZAVG) of the vehicle environment for which the confidence level (NCAVG) of the autonomous mode driving is below the high confidence level (SCE); and in that the control device (16) is configured to control the illumination system (12) to flash said light strip (20) arranged in the perimeter area (48) of the passenger compartment corresponding to the area (ZAVG) of the environment according to which the level of confidence (NCAVG) is below the determined confidence level (SC)