This light-emitting element drive control device (100) comprises: a drive logic unit (113) which performs a drive control of a switch output stage (N1, D1, L1) for dropping an input voltage (VIN) to an output voltage (VOUT) and supplying a light-emitting element therewith; a charge-pump power supply unit (a) which generates a step-up voltage (CP) higher than the input voltage (VIN); and a current detecting comparator (114) which receives a supply of the step-up voltage (CP) and the output voltage (VOUT) as power supply voltages, and generates control signals (SET, RST) for the drive logic unit (113) by directly comparing a current detection signal (Vsns) corresponding to an inductor current (IL) of the switch output stage with a peak detection value (Vsns_pk) and a bottom detection value (Vsns_bt).

Aspects of the disclosure provide for displaying notifications on a display of an autonomous vehicle 100. In one instance, a distance from the vehicle to a destination of the vehicle or a passenger may be determined. When the distance is between a first distance and a second distance, a first notification 650 may be displayed on the display. The second distance may be less than the first distance. When the distance is less than the second distance, a second notification 660 may be displayed on the display. The second notification provides additional information not provided by the first notification.

A method, system and non-transitory computer readable medium for suppressing autonomous vehicle external human machine interface (eHMI) notifications to prevent confusion or distraction of a road user. The suppression conditions are based on situations where the eHMI notification is redundant, not necessary, can be simplified or should be modified due to weather or light intensity. The eHMI notifications can be suppressed on selected displays and enhanced on others. The eHMI notifications can include text and icons, flashing lights, color or light patterns, which can be modified or suppressed based on the determination that the eHMI notification will confuse or distract the road user. At a four-way stop intersection, the eHMI notification can be suppressed until the autonomous vehicle has the right-of-way. The autonomous vehicle can form a mesh network with connected vehicles at the intersection and broadcast a group eHMI while requesting that the connected vehicles suppress their eHMIs.

A trailer lighting activation system includes a vehicle light sensor, an ambient light sensor, and a microcontroller. The vehicle light sensor is removably attached to a towing vehicle light to detect a light output of the towing vehicle light, and to provide a vehicle light sensor output signal in response to the light output of the towing vehicle light. The ambient light sensor can detect an ambient light level and provide an output signal in response to the ambient light level. The microcontroller is coupled to the vehicle light sensor output and to the ambient light sensor and has an output for energizing a trailer light in response to the ambient light sensor output signal and the vehicle light sensor output signal. An overcurrent monitor is coupled to the trailer light and to monitor current drawn by the trailer lighting activation system.

A reflector unit may behave as a retroreflector to reflect light of a selected color. The reflector unit may comprise a first reflector having a first color, a second reflector having a second color, and a mask that either allows incoming light to reach the first reflector and not the second reflector or allows incoming light to reach the second reflector and not the first reflector. An active light unit may emit light of a particular color in response to receiving light. In this fashion, the active light unit may simulate the operation of a reflector. The reflector unit and the active light unit may operate on a bi-directional vehicle.

Devices, systems, and methods for management of electrical resources for electric vehicles. A method may include receiving, by a vehicle, sensor data indicative of a first luminosity of a location, and determining that the first luminosity of the location exceeds a luminosity threshold. The method may include determining, based on the first luminosity exceeding the luminosity threshold, a second luminosity to apply to lights of the vehicle while the vehicle is at the location, the second luminosity greater than zero. The method may include applying the second luminosity to the lights while the vehicle is at the location.

A light intensity control system in a vehicle enables the head lamp of the vehicle and the display of the instrument cluster to switch between one or more beam position depending on the ambient light intensity directly in the field view of the driver's eye.

The present invention may include a replaceable vehicle light including a lamp body, a printed circuit board (pcb) supported by the lamp body, and the pcb may include a plurality of individual lights arranged in a radial pattern. A controller chip may be included on the pcb, the controller chip may provide electrical energy to each of the individual lights, thereby enabling selective illumination of each of the individual lights. The controller chip may provide a lighting designation, wherein some of the individual lights are designated as primary lights being illuminated at a first brightness, which may illuminate in a radial pattern. The radial pattern may provide a more visible pattern which may be more distinguishable from other roadway lighting, thereby increasing visibility of the replaceable vehicle light.

According to one aspect, headlights of a vehicle are used to communicate information that may be understood by a user or other person in the vicinity of the vehicle. A method includes operating a vehicle and determining a status of the vehicle. The vehicle has a park gear arranged to be engaged to cause the vehicle to be in a parked state, and the vehicle includes a first optical assembly that has a first optical arrangement and a first optical controller. The method also includes causing the first optical arrangement to visually communicate a first indication, the first indication being arranged to indicate the status of the vehicle.

An example warning device can include: a plurality of light sources forming an array; a plurality of reflectors, with at least one reflector being associated with each of the plurality of lights; at least one lens for each of the plurality of lights; and an optical prism plate that directs light from one or more of the plurality of lights to one of a plurality of far field light spots.