Traffic Manual
The Traffic Manual is a guide for department personnel in traffic operations and design. It does not establish absolute standards but establishes uniform guidelines and procedures for the use of traffic control devices.
May 2021 M 51-02.10 revision package (PDF 18.3MB)
Individual Chapters
Foreword (PDF 195KB)
Contents (PDF 233KB)
Chapter 1 General Information (PDF 394KB)
Chapter 2 Signs (PDF 870KB)
Chapter 3 Delineation and Markings (PDF 313KB)
Chapter 4 Multimodal Planning, Design, and Operational Considerations (PDF 156KB)
Chapter 5 Work Zone Traffic Control (PDF 3.3MB)
Chapter 6 Traffic Regulations (PDF 595KB)
Chapter 7 Specialized Highway Uses (PDF 1.7MB)
Chapter 8 Highway Advertising Control (PDF 1.2MB)
Chapter 9 Traffic Planning, Safety, Operations, and Design (PDF 340KB)
Chapter 10 Intersection Control Evaluation (PDF 365KB)
Chapter 11 Traffic Engineering Records Management (PDF 463KB)
Chapter 12 Multimodal Traffic Impact Analysis Guidelines (PDF 174KB)
Revision History
May 2021
November 2018
July 2015
December 2011
June2011
April 2011
April 2010
October 2009
May 2009
August 2008
January 2005
March 2002
November 1996
Slow down – lives are on the line.
In 2023, speeding continued to be a top reason for work zone crashes.
Even one life lost is too many.
Fatal work zone crashes doubled in 2023 - Washington had 10 fatal work zone crashes on state roads.
It's in EVERYONE’S best interest.
95% of people hurt in work zones are drivers, their passengers or passing pedestrians, not just our road crews.