This article explores the application effect and technical implementation path of automotive LED light efficiency adaptive control technology in intelligent driving environments, and evaluates the impact of multi-mode light efficiency control strategies on driving safety performance under different environmental conditions through on-board experiments. The results show that adaptive light effect control based on environmental perception and driving status can significantly improve the safety performance of night driving and reduce the accident risk rate by approximately 32%.Light efficiency control is positively correlated with visual comfort, and the adaptive mode optimizes the balance between energy consumption and lighting effect, improving the average energy utilization efficiency by approximately 18%. The research provides practical basis and theoretical support for the development of light efficiency control technology in intelligent driving systems.