Optimizing Non-Glare Zone Width of Adaptive Driving Beam (ADB) Using Fuzzy Logic Control

Yihong Chen,Arash Ahmadi,Mohammed Jalal Ahamed

doi:10.3390/app11198840

Abstract

Adaptive driving beam (ADB) is an advanced vehicle forward-lighting system that automatically adapts its beam patterns to create a non-glare zone around vehicles, providing good long-range visibility for the driver without causing an uncomfortable glare for other road users. The performance of the ADB system is affected by the non-glare zone width. A narrow non-glare zone could create indirect glare in the side rearview mirrors of preceding vehicles during sharp turns while widening it results in poor road illumination. This research studies the trade-off relationship between glare and road illumination when altering the width of the non-glare zone in different driving scenarios. The study is conducted by using virtual driving simulation tools to simulate an ADB vehicle on four S-curve roads with minimum curvatures varying from 25 m to 100 m. Lux data are collected and processed using a fuzzy logic controller to mimic a human test driver to find the best non-glare zone width for balancing the trade-off. The research developed a design methodology allowing for a better understanding of the effect adjusting the width of the ADB non-glare zone has on ADB performance and improved ADB non-glare zone width optimum control system design.

Highlights

Automotive forward lighting is significant for driving safety, especially for night driving
Note that the minimum curvature proposed by NHTSA for Adaptive driving beam (ADB) testing in NPRM Appl
If the proposed ADB testing procedure is executed, the minimum non-glare zone width of this ADB should be set to 143% of the boundary box to meet the legal requirement

Summary

Introduction

Automotive forward lighting is significant for driving safety, especially for night driving. Adaptive driving beam (ADB) is an advanced vehicle forward-lighting system that automatically adapts its beam patterns to create a non-glare zone that includes both oncoming and preceding vehicles. In most driving scenarios, a vehicle equipped with ADB could provide the driver with road illumination equivalent to a high beam [1], while the glare it creates for other road users is similar to a vehicle with its low beam turned on [2,3]. Due to the limitations of the system, indirect glare in the rearview mirror was experienced in some sharp corners; an example of such a sharp corner is shown, in which the minimum curvature of the pointed S-curve is approximately 25 m This limitation is caused by the nighttime vehicle recognition technology used in the ADB system.

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Discussion

Conclusion