CMF / CRF Details

CMF ID: 8379

Installation of fixed speed cameras

Description: Installation of fixed speed cameras on arterials limited access freeways

Prior Condition:  No speed camera present

Category: Speed management

Study: Safety effects of fixed speed cameras - An empirical Bayes evaluation, Hoye, 2015

 
Star Quality Rating:3 Stars  [View score details]
Rating Points Total:105
Crash Modification Factor (CMF)
Value:0.87
Adjusted Standard Error:
Unadjusted Standard Error:0.066
Crash Reduction Factor (CRF)
Value:13  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:6.63
Applicability
Crash Type:All
Crash Severity:K (fatal),A (serious injury),B (minor injury),C (possible injury)
Roadway Types:Not specified
Street Type:
Minimum Number of Lanes:2
Maximum Number of Lanes:2
Number of Lanes Direction:
Number of Lanes Comment:
Crash Weather:Not specified
Road Division Type:
Minimum Speed Limit:50
Maximum Speed Limit:90
Speed Unit:km/h
Speed Limit Comment:
Area Type:Rural
Traffic Volume:
Average Traffic Volume:8186 Annual Average Daily Traffic (AADT)
Time of Day:All
If countermeasure is intersection-based
Intersection Type:
Intersection Geometry:
Traffic Control:
Major Road Traffic Volume:
Minor Road Traffic Volume:
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used:2004 to 2013
Municipality:
State:notusa
Country:Norway
Type of Methodology Used:Before/after using empirical Bayes or full Bayes
Sample Size (crashes):243 crashes before, 149 crashes after
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Nov 10, 2016
Comments:Long section: 100m upstream and 3km downstream of camera location. Camera installed during 2007-2010 period