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I'm looking into providing additional guidance for our staff on the use of temporary crash cushions and sand barrel arrays.
During my reviews, I found NCHRP Report 358 Recommended Practices for Use of Traffic Barriers and Control Treatments for Restricted Work Zone (see attached). I have the following questions:
|Date||August 9, 2010|
I have responded to your questions in red
The charts mentioned in NCHRP 358 are currently the best guidance for barrier flare rates n the work zone. No further analysis has been done to update those tables with more recent accident data or to make considerations for MASH.
|Date||August 16, 2010|
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