Wed, Aug 21, 2013 02:27 PM
The Vermont Agency of Transportation (VTrans) is scheduled to
install centerline rumble strips (CLRS) for enhanced safety. This
new installation will add to the already 80 miles of CLRS currently
in use on Vermont Highways. 50 miles of CLRS are planned statewide
this year including 12.8 miles along the Route 4 corridor between
Woodstock and Bridgewater.
"Our initial experience with centerline rumble strips has shown an
average 18% reduction in crashes where we have deployed them," said
Highway Safety and Design Program Manager Ken Robie. "The kinds of
crashes they are preventing are also the ones most likely to lead
to fatalities so we see this as an important area for investment. A
few years ago, we still considered rumbles to be an experiment, but
the results are so overwhelmingly positive that now communities are
coming to us requesting them."
The rumble strips (also known as audio tactile profiled markings)
are a cost-effective safety treatment used to reduce the risk of
crossover collisions. Consisting of parallel grooves cut into the
centerline of the roadway, tires running over the rumble strips
produce sound and vibration when drivers veer out of their lane.
The sound and vibration serve to alert motorists to correct their
The strips have been used on two-lane roads in other states for
over 20 years. The Federal Highway Administration considers the
rumble strips to be a proven countermeasure to reduce
cross-centerline crashes on roads with a marked centerline. There
are 36 states currently using centerline rumble strips. Bad weather
conditions like snow, rain and fog often make it difficult for
drivers to see the centerlines. The rumble strips help drivers
locate the travel lane during inclement weather. There is also
improved visibility of the painted strip when the pavement marking
is painted on top of the rumble strip.
The Vermont Agency of Transportation is committed to providing a
safe and resilient transportation system in the most cost effective
and efficient manner.