Proceedings of the International Symposium on Highway Capacity, Karlsruhe, Germany, July 1991. Papers range widely from driving behavior and pedestrian to the numerical value of freeway capacity and transit capacity.

"This report completes and updates the first edition of NCHRP Report 600: Human Factors Guidelines for Road Systems (HFG), which was published previously in three collections. The HFG contains guidelines that provide human factors principles and findings for consideration by, and is a resource document for, highway designers, traffic engineers, and other safety practitioners."--Foreword.