PreMark® In-Lane Rumble Bars
PreMark® In-Lane Rumble Bars provide a visual, audible and vibratory awareness to alert drivers of special road conditions or situations that might not be apparent as well as help reduce driver risk and unsafe driving practices such as street racing.
PreMark® Rumble Bars are made of high-performance preformed thermoplastic. The base layer is 125 mil PreMark® material but without the surface glass beads. The top layer is a preformed thermoplastic 250 mil PreMark® Rumble Bar that is flexible and conforms to the surface which eliminates breakage associated with rigid plastic and ceramic bars. PreMark® Rumble Bars are available in black, white, yellow and orange. PreMark® Rumble Bars install easily onto asphalt or portland cement concrete with an industrial propane heat torch such as the Flint 2000EX. Maintenance is easy as a new rumble bar section can be easily cut to fit any worn or damaged area.
Rumble bar spacing is highly variable due to the roadway situation being addressed and the vehicle speed. Rumble bars installed closer to an intersection may have closer spacing to generate an artificial sensation of increased vehicle speed resulting in a conscious driver decision to reduce vehicle speed.
A supplemental pavement marking legend such as “STOP AHEAD” or “SLOW 35 MPH” can be applied either before traffic meets the rumble bars or between two sets of bars for additional effectiveness.