Manual Notice: 2015-1

From: Carol T. Rawson, P.E

Manual: Procedures for Establishing Speed Zones

Effective Date: August 01, 2015


The purpose of this revision is to update information in Chapter 3 of Procedures for Establishing Speed Zones pertaining to the establishment of lower than 85th percentile speeds on sections of highways with crash rates greater than the statewide average for similar roadways. The update specifies criteria and procedures used to make this determination, and is issued as a response to a recent rule change by the Texas Transportation Commission.


The only content change made at this time, described in the paragraph above, appears on pages 3-18 and 3-19 of this manual.


This manual supersedes all prior editions of Procedures for Establishing Speed Zones.


For more information on the changes made to Procedures for Establishing Speed Zones, contact Brian Stanford in the Traffic Operations Division, Traffic Engineering Section by email at, or by phone at (512) 416-3122.�


Past manual notices are available in a PDF archive.

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