Actual field testing was conducted in two phases: (1) disability glare, which affects seeing distance and (2) discomfort glare, which is a psychological phenomenon. Static and dynamic tests were conducted on discomfort glare. Conclusions regarding the lateral separation needed to reduce the discomfort of oncoming headlight glare were drawn. The factors influencing the amount and effects of glare, the suggested methods of alleviating glare, and the sources of experimental error are included.
Abstract