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inauthor:"Margaret Joanna Rys" de la books.google.com
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 339: Centerline Rumble Strips (CLRS) examines current design, installation, configuration, dimension, and visibility issues associated with CLRS.
inauthor:"Margaret Joanna Rys" de la books.google.com
KSU surveyed U.S. and Canadian provinces and found no serious negative problems with centerline rumble strips (CLRS) and recommended that they be field tested.