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Research Reports

Clear Zones for Local Agencies

Description: The reported study was used to investigate clear zone practices, policies and standards that are employed both within Washington State and throughout the United States. Emphasis was placed on those standards or guidelines that apply to local city and county roadways which are predominantly low volume and low speed facilities. 

The review of nationwide clear zone practices pointed to a need for a set of clear zone guidelines or standards that apply specifically to low volume, low speed facilities. The research also pointed to the need for guidelines or standards that could be easily applied by city or county agencies with limited staff and limited budgets. 

One of the findings of the research is a step by step format for agencies to use in establishing a program to address existing clear zone deficiencies.

  • Date Published: September, 1989
  • Publication Number: WA-RD 194.1
  • Last Modified: September 20, 2007
  • Authors: D.H. Carr, J.J. Curtin, P.E. Dorvel.
  • Originators: CENTRAC, R.W. Beck and Associates.
  • # of Pages: 54 p., 1,224 KB (PDF)
  • Subject: Clear zones, County roads, Guidelines, Local government, Low volume roads, Standards, Streets, Traffic speed.
  • Keywords: Clear zone, control zone, recovery area, Washington (State), United States.
  • Related Publications:


This abstract was last modified April 29, 2008