54 | INFRASTRUCTURE
Reliable rumble strip creation A modern IT platform and tried-and-tested thermoplastic extruder are making it easier to create centerline rumble strips, a very effective traffic safety measure Words | Christina Krogh, Borum Industri, Denmark
Borum’s thermoplastic extruder has been used to make rumble strips for decades
Many international studies demonstrate that centerline rumble strips are an effective measure in reducing road traffic crashes. Some studies suggest that they can reduce the number of crashes by up to 55%1. It is also the reported experience of Borum’s customers who apply this kind of marking. Single-vehicle run-off-the-road crashes and collisions caused by cars going across the centerline and into the path of oncoming vehicles are not uncommon on highways and two-lane rural roads. This has inspired various stakeholders to experiment with centerline rumble strips. They are placed between opposing lanes of traffic to alert drivers that they have crossed over into the
Intertraffic World | Annual Showcase 2018
path of oncoming traffic. These raised or grooved patterns suddenly produce an uncomfortable vibration and noise as the vehicle’s tires pass over them, to stimulate the driver’s attention, and consequently act as a countermeasure against run-offthe-road accidents and head-on collisions. Borum machines have been used to apply these markings all over the world, in countries including the USA, Australia and Denmark. They can be implemented as extruded profiles in thermoplastic material, or as a two-component profile application.
Thermoplastic extrusion Extrusion of thermoplastic material is the classic solution used to achieve
