Vehicle Lamp Control Using Road User Reaction Feedback

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Solution Overview

Problem

Existing vehicle light emission control systems are inadequately perceived and interpreted by other road users, leading to potential misinterpretation and increased risk in traffic situations.

Innovation Solution

A method that detects road users in the light emission direction, records their reaction to changes in light emission, determines forecast data, and adjusts the light emission to minimize deviations between predicted and actual reactions, using sensors and artificial intelligence to adapt lighting intensity and area based on hazard severity and ambient conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If adaptive light emission control is implemented to adjust lighting according to traffic situation, then road safety and visibility are improved, but the lighting function becomes inadequately perceived and interpreted by other road users

Engineering Contradiction:
Improveroad safetyVSAvoidinterpretability of lighting function
Core Design Contradiction:
ReliabilityVSLoss of information

Solution Approach 1:

The system detects road users in the light emission direction, records their reaction data to light emission changes, compares actual reactions with forecast reactions, and uses this feedback loop to iteratively adjust light emission settings. This ensures the lighting remains both adaptive for safety and interpretable for road users.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The light emission is dynamically adjusted based on detected traffic situations, road user reactions, and environmental conditions. The system can change intensity, activate different light segments, and modify emission patterns in real-time while maintaining interpretability through iterative optimization.

Inventive Principle:
Principle #15Dynamics

2Reliability

If light emission intensity is increased to improve visibility and alert other road users, then road safety is enhanced, but energy consumption increases

Engineering Contradiction:
Improvevisibility and road safetyVSAvoidenergy consumption of vehicle light
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

Instead of uniformly increasing light emission across all conditions, the system applies partial action by adjusting only specific light segments or intensity levels based on the detected traffic situation and road user reactions. This optimizes visibility while minimizing unnecessary energy consumption.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The system dynamically changes light emission parameters (intensity, duration, pattern) based on environmental conditions and detected road user reactions, achieving effective visibility enhancement only when and where needed, thus reducing overall energy consumption.

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If complex adaptive control systems with AI and multiple sensors are implemented, then lighting adaptability is improved, but device complexity increases

Engineering Contradiction:
Improvelighting adaptability to traffic situationVSAvoidsystem complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system uses multi-functional components where sensors serve both primary detection functions and secondary functions for light emission optimization. The AI evaluation unit performs multiple tasks including reaction forecasting, situation assessment, and control optimization, reducing the need for separate dedicated components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system merges the detection, evaluation, and control functions into an integrated adaptive light emission control system. The AI unit combines data from multiple sensors and processes multiple objectives (safety, interpretability, energy efficiency) through unified evaluation and optimization routines.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4201744B1Method and system for controlling light emission of a vehicle lamp
Publication Date: 2025.08.13 VOLKSWAGEN AG
  • EP4201744B1 patent drawingFigure 1
  • EP4201744B1 patent drawingFigure 2

AI summary

The present invention relates to a method for controlling the light emission of a vehicle lamp, in which a road user arranged in the direction of light emission of the vehicle lamp is detected, and the light emission of the vehicle lamp is changed, whereupon reaction data on the reaction of the road user to the change in light emission are recorded, prediction data are determined which indicate which reaction of a road user arranged in the direction of light emission of the vehicle lamp is expected to the changed light emission, the recorded reaction data are compared with the determined prediction data, if there is a deviation of the prediction data from the reaction data, it is determined by which adjustment of the light emission of the vehicle lamp a reduction of the deviation is predicted, and the light emission of the vehicle lamp is controlled according to the determined adjustment.Furthermore, the invention relates to a device for carrying out this method.