A road surface drawing system includes a road surface drawing lamp that is provided in a vehicle and illuminates a road surface with a beam, and a controller that controls the road surface drawing lamp and draws, with a beam BM, a pattern PTN on the road surface ahead of the vehicle. The controller draws a pattern PTN instructing the vehicle to stop if a signal state of an upcoming traffic signal is a red light.

A route control device includes a control unit that sets an angle of a guideway for guiding a wheelchair user with respect to a roadway in accordance with a length of a waiting time for which a vehicle traveling on the roadway is kept waiting, when the wheelchair user who is about to cross the roadway is detected, and performs a control of displaying a pedestrian crossing including the guideway on the roadway.

An absorber device for electromagnetic sensor systems has at least one aperture. Each aperture is able to be opened and closed by an aperture closure. The absorber device is designed in such a way that when the aperture is open, electromagnetic waves incoming through the aperture do not then leave the absorber device, and when the aperture is closed, electromagnetic waves impinging on the aperture are reflected.

A vehicle abnormality monitoring method includes starting, by a vehicle, a monitoring device to record a first video when detecting an abnormal event; determining a roadside device in an area where the vehicle is located; and sending, to the roadside device, a monitoring request requesting the roadside device to record a second video of the abnormal event, where the first video and the second video are configured to trace the abnormal event.

Devices and methods for improving the flow of traffic at an intersection are disclosed, such as a traffic light assistance system comprising a light emitter, a light-directing device, a vehicle sensor, a traffic signal detector, and a control unit. The traffic light assistance system can be configured to detect a vehicle and direct projected light toward said vehicle to indicate a change of status of a traffic light. Such devices and methods can alert an operator of a vehicle to a change of status of a traffic light, such as a traffic signal turning green, and indicating that the operator should accelerate the vehicle. By providing means to alert otherwise distracted or inattentive drivers, time spent in traffic can be reduced.

Devices and methods for improving the flow of traffic at an intersection are disclosed, such as a traffic light assistance system comprising a light emitter, a light-directing device, a vehicle sensor, a traffic signal detector, and a control unit. The traffic light assistance system can be configured to detect a vehicle and direct projected light toward said vehicle to indicate a change of status of a traffic light. Such devices and methods can alert an operator of a vehicle to a change of status of a traffic light, such as a traffic signal turning green, and indicating that the operator should accelerate the vehicle. By providing means to alert otherwise distracted or inattentive drivers, time spent in traffic can be reduced.

A method comprising a data processing device predicting a time for a future state change of a first traffic light; a method comprising a data processing device generating a map of traffic lights, wherein the map of traffic lights comprises a location of at least one localization traffic light, and methods combining these methods, and to corresponding systems.

A method comprising a data processing device predicting a time for a future state change of a first traffic light; a method comprising a data processing device generating a map of traffic lights, wherein the map of traffic lights comprises a location of at least one localization traffic light, and methods combining these methods, and to corresponding systems.

A traffic signal recognition method and a traffic signal recognition device acquire a result sequence consisting of a plurality of determination results in time-series order obtained by determining a display state of a traffic signal based on a plurality of images of a traveling direction of a vehicle, set a first threshold as a number threshold if a first distance from a position of the vehicle to a position of a stop line corresponding to the traffic signal is equal to or greater than a distance threshold, set a second threshold smaller than the first threshold as the number threshold if the first distance is less than the distance threshold, and output a latest determination result if a number of determination results identical to the latest determination result is greater than the number threshold, among the determination results.

A traffic signal recognition method and a traffic signal recognition device acquire a result sequence consisting of a plurality of determination results in time-series order obtained by determining a display state of a traffic signal based on a plurality of images of a traveling direction of a vehicle, set a first threshold as a number threshold if a first distance from a position of the vehicle to a position of a stop line corresponding to the traffic signal is equal to or greater than a distance threshold, set a second threshold smaller than the first threshold as the number threshold if the first distance is less than the distance threshold, and output a latest determination result if a number of determination results identical to the latest determination result is greater than the number threshold, among the determination results.