Rest Area Usage Design Criteria Update

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.
Publication Date: 
Sunday, January 1, 1989
Publication Number: 
WA-RD 173.1
Last modified: 
10/12/2016 - 15:41
William Melton, Anh Tran, Julie Leverson.
Washington State Transportation Center (TRAC)
Number of Pages: 
Computer programs, Data collection, Design, Parking, Roadside rest areas, Surveys, Utilization.