Safe Main Street Highways Part I: Washington State Collision Data and Geocoding

This project contributes to the Washington State Strategic Highway Safety Plan, whose goals are
to achieve zero road fatality and serious injury by 2030 and to reduce the number of pedestrians
and bicyclists involved in motor-vehicle collisions on state highways. The study focused on
“main street highways” (MSHs), which are stretches of State Routes that also act as main streets
for the local populations. This report covers Part I of this study, which collected an inventory of
collision data in Washington state from 2001 to 2012. The project tallied those collisions that had
been geocoded, and the report describes the various methods used for geocoding. More than 90
percent of the collisions had been geocoded for 2010, 2011, and 2012, but only pedestrian and
bicyclist collisions had been geocoded for the years between 2001 and 2009.

Publication Date: 
Thursday, September 21, 2017
Publication Number: 
WA-RD 862.1
Last modified: 
09/22/2017 - 07:45
Anne Vernez Moudon, Mingyu Kang
Washington State Transportation Center (TRAC-UW)
Number of Pages: 
Crash locations, Crash types, Highway safety, Crashes, Geographic information systems, State highways, Descriptive statistics, Pedestrian vehicle interface, Traffic conflicts, Crash data, Pedestrian-vehicle crashes, Bicycle crashes, Arterial highways.