V2X Communication Lighting Systems for Enhanced Traffic Safety
9 patents in this list
Updated:
Modern traffic environments increasingly require vehicles to communicate their intentions and status beyond traditional turn signals and brake lights. Field measurements show that conventional lighting systems are visible for only 100-150 meters in optimal conditions, and their effectiveness drops significantly in adverse weather or when line of sight is blocked by larger vehicles—creating critical safety gaps in complex traffic scenarios.
The fundamental challenge lies in developing lighting systems that can simultaneously serve their primary safety function while enabling rich vehicle-to-everything (V2X) communication without creating driver confusion or information overload.
This page brings together solutions from recent research—including adaptive matrix lighting systems, integrated fog lamp displays, dynamic pedestrian-aware illumination patterns, and autonomous vehicle status indicators. These and other approaches focus on enhancing traffic safety through improved visual communication while maintaining compatibility with existing infrastructure and driver expectations.
1. Traffic Signal Visibility Notification System with Obstruction Detection and Signal State Relay
NEC Corporation, 2023
Notifying vehicles behind blocked line-of-sight of traffic signal displays when their view is obstructed by a preceding vehicle. The system uses sensors to detect vehicles in the line of sight of a traffic signal. If a sensor sees a vehicle behind the detected vehicle that can't see the signal due to a preceding vehicle, it notifies the blocked vehicle about the signal state. This allows vehicles to be aware of signal changes even if they can't directly see the signals.
2. Integrated Vehicle Lighting System with Selective Activation for Dual Functional and Communication Signals
Ford Global Technologies, LLC, 2023
Integrated vehicle lighting that can simultaneously provide both functional lighting for vehicle operation and communication signals. The system has a single lamp assembly with multiple lights that can be selectively activated based on separate determinations for vehicle lighting needs and communication needs. This allows the vehicle to use the same lighting hardware for both purposes without needing separate dedicated lighting systems. The system can, for example, turn off some lights for functional lighting while activating others for communication signals or vice versa. This enables multimodal lighting functionality from a single lamp assembly.
3. Vehicle Body-Integrated External Light System for Driving Status Communication
HYUNDAI MOBIS CO., LTD., 2023
Communicating a vehicle's driving status to pedestrians and surrounding vehicles using the vehicle body itself as a communication medium. The system detects if an object is approaching within a certain distance. When an object is nearby, it displays the vehicle's driving status, like braking or turning, through external lights on the vehicle body. This allows pedestrians and other drivers to see the vehicle's intended path and actions before they interact. It expands the communication range beyond just headlights and signals.
4. Vehicle Lighting System with Dynamic Illumination Pattern Adjustment Based on Pedestrian Proximity
ALPHA EC INDUSTRIES 2018 S.A.R.L., 2022
A vehicle with a dynamic lighting system that changes the illumination pattern based on the position of nearby pedestrians and other road users. The system has two lighting configurations: a regular one using the full light surface and an offset configuration using a subset of the surface. When a pedestrian is detected in front of the vehicle, it switches to the offset configuration to illuminate a visible portion of the surface around the pedestrian instead of the whole area. This helps pedestrians see through masks or obstructions that could hide the regular lights.
5. Fog Lamp with Integrated Secondary Display Featuring Matrix Elements and Communication Interfaces
Myotek Industries, 2021
A vehicle fog lamp with a secondary display integrated into the lens that can communicate with pedestrians. The fog lamp has a main LED illumination component and a secondary display containing matrix elements. The secondary display can show variable depictions based on processor input. It can communicate with pedestrians directly through the fog lamp's turn signal processor or via external devices using Bluetooth or NFC. The secondary display can notify pedestrians of turns or provide additional information.
6. Self-Driving Vehicle Communication System with Shape-Adaptive Ring-Shaped LED Headlight Displays
HONDA MOTOR CO., LTD., KOITO MANUFACTURING CO., LTD., 2021
Communication devices for self-driving cars to interact with pedestrians and other drivers. The device uses ring-shaped lights around the headlights that change shape to mimic eye contact when the car communicates. The lights have LEDs that can be selectively turned on to create different shapes. When the car is self-driving, the lights change based on the communication to indicate intentions. This provides clearer and more intuitive communication compared to just turning on all the lights. The lights can also be covered by a lens that darkens the non-lit areas to make the changing shapes more visible.
7. Vehicle Lighting Control System with Adaptive Display-Based Illumination and Folding Mechanism
Scania CV AB, 2021
Controlling vehicle lighting devices with displays to adapt and enhance visibility in different environments. The method involves collecting vehicle surroundings data and using it to customize the displayed lights. The displays can show conventional lights like headlights, brakes, turn signals, etc., but with optimized characteristics based on conditions. This improves safety by making lights more noticeable/distinguishable. The displays can also provide visual alerts for potential dangers. The displays can fold out to reduce drag when extended, like a boat tail, when the vehicle is platooning.
8. Vehicle Notification System with Dynamic Light Characteristics Based on Sensor-Derived Parameters
WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORPORATION, 2021
Enhanced vehicle notification system that provides information to a vehicle operator using a notification light. The system determines parameters like vehicle speed, direction, and distance to an approaching vehicle and then changes the light characteristics to communicate that information to the other vehicle visually. This allows quicker reaction time and avoidance compared to just seeing the vehicle's presence. The light changes can convey details like braking, reversing, or stopping ahead. To determine the parameters, the system uses onboard sensors and/or inputs like GPS, magnetometers, and off-board signals.
9. Vehicle Illumination System with Patterned Light Signals for Inter-Vehicle Communication
KOITO MANUFACTURING CO., LTD., 2020
Vehicle illumination devices to indicate inter-vehicle communication between autonomous vehicles to improve safety when manual and automated vehicles coexist. The device has lights that can flash a pattern when one autonomous vehicle communicates with another. This visual cue alerts pedestrians and other vehicles that the communicating vehicles are coordinating and can help prevent collisions. The communication is initiated by a master vehicle, and other vehicles respond. The master vehicle flashes its lights to indicate communication.
These cutting edge technologies have the ability to increase efficiency, safety, and coordination on the roads through real-time data interchange. A major advancement in automobile technology is the lighting systems for Vehicle-to-Car (V2X) communication.