Discusses the amounts & types of pollutants derived from vehicles as well as other sources; reports on the pollutants found in highway runoff; the effect of highway runoff on streams, rivers, lakes, wetlands, soil water, & groundwater; the important constituents in runoff from construction sites & analyzes the effects on receiving water quality; & the results from studies of source management as well as permanent pollution controls to protect receiving waters from the possible effects of highway runoff. Contains 55 tables & figures.