This volume, the fourth of a four-volume final report, provides the specific sites initially studied for possible geometric design inconsistencies, laboratory experimental methods and a detailed step-by-step cost-effectiveness procedure. The cost-effectiveness procedure follows closely those recommended by AASHTO in its publication-"A Manual of User Benefit Analysis of Highway and Bus Transit Improvements." A total of 148 sites located in Texas and Georgia were inventoried using videotape, Super-8 film and 35 mm color slides. These sites provided the base from which the 12 most critical basic geometric features were identified as having the highest average potential for violating driver expectancy based on subjective rating procedures. This volume is the fourth in a series. The others in the series are: Volume 1-FHWA/RD-81/035 Executive Summary; Volume 2-FHWA/RD-81/036 Research Report; and Volume 3-FHWA/RD-81/037 Design Procedure. (FHWA)
Samenvatting