Development and Use of Driving Tests to Evaluate Headlamp Beams.

摘要

Results of analyses of accident data to evaluate the contributory role of headlighting were inconclusive. Reflectance values of various objects in the driver's field-of-view were measured. Pilot studies were made to evaluate test targets,and the results were used to describe desirable characteristics of a test target for use in subsequent tests. A series of headlighting field tests were carried out to develop a reliable field test method,evaluate variables affecting visibility provided by headlamps,and generate data for use in validating a mathematical model. Driving tests were also used to evaluate glare effects of various beams to oncoming and preceding drivers. (Modified author abstract)