Crash Modification Factor for Speed Feedback Signs

Applications, new CMFs and Crash Modification Factors Clearinghouse

Moderator: khardy

Crash Modification Factor for Speed Feedback Signs

Postby chris.milner » Fri Mar 11, 2011 11:24 am

We are considering installing Speed Feedback signs on a project and are interested in the predicted results this installation would provide. The HSM provides CMFs for Speed Enforcement, but not Speed Feedback Signs. I've also perused the CMF Clearinghouse and have not had luck finding anything for speed feedback signs. Am I using incorrect terminology? I would have thought that there has been research on the effectiveness of this countermeasure.
Chris Milner, P.E., PTOE
Kimley-Horn and Associates, Inc.
chris.milner@kimley-horn.com
chris.milner
 
Posts: 10
Joined: Sun Nov 28, 2010 11:11 pm
Location: Phoenix, AZ

Re: Crash Modification Factor for Speed Feedback Signs

Postby dlcarter » Fri Mar 11, 2011 12:23 pm

Chris,
I searched the CMF Clearinghouse and found a couple CMFs that might apply to your proposed Speed Feedback signs. (I went to the advanced search and searched for the word "speed" and checked the box below it for only searching in countermeasure name).

Install changeable speed warning signs for individual drivers.
http://www.cmfclearinghouse.org/detail.cfm?facid=78
This one is actually in the HSM as well on page 13-31 (vol 3).

Individual changeable speed warning signs
http://www.cmfclearinghouse.org/detail.cfm?facid=79
The CMF details in the Clearinghouse show that this is just for serious and minor injury crashes, not all crashes.

Hope this is helpful.
Daniel Carter (contracted manager of the CMF Clearinghouse database and website)
Daniel Carter, PE
Research Associate, UNC Highway Safety Research Center
dlcarter
 
Posts: 2
Joined: Thu Dec 09, 2010 7:26 am
Location: Chapel Hill, NC

Re: Crash Modification Factor for Speed Feedback Signs

Postby chris.milner » Fri Mar 11, 2011 1:47 pm

This is very helpful. Thank you Daniel!
Chris Milner, P.E., PTOE
Kimley-Horn and Associates, Inc.
chris.milner@kimley-horn.com
chris.milner
 
Posts: 10
Joined: Sun Nov 28, 2010 11:11 pm
Location: Phoenix, AZ


Return to Part D - Crash Modification Factors

Who is online

Users browsing this forum: No registered users and 1 guest

cron