A data survey was conducted at eight rest area sites in Washington to reevaluate the rest area design guidelines for the number of parking stalls, the water/sewage volume, and the number and ratio of women's to men's restroom stalls. The criteria for the number of parking stalls and water/sewage volume are affected by the increased highway traffic volume and a lower average vehicle occupancy. A fifty/fifty ratio of women's to men's stalls was the standard, but the results of the data analysis show that a sixty/forty ratio is more appropriate. A simulation program, written in Lightspeed Pascal, is available to assist in determining the respective number of stalls based on vehicle arrival rate.
Washington State Transportation Center (TRAC)
Computer programs, Data collection, Design, Parking, Roadside rest areas, Surveys, Utilization.