The TSP2 Help Desk has received a request for information on the minimum skid numbers used by various state DOTs.
More specifically, the question relates to a Fog Seal study being conducted on behalf of CALTRANS. The researchers are ultimately interested in pursuing the use of an ASTM D-274 locked wheel tester to test some of the newer pavements and rubber pavements after placement to check their skid numbers.
If anyone has any information on minimum skid numbers for various state DOTs, please post it here, or contact the NCPP.
Thank you.