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Temporary Traffic Control

Devices and early warning methods used to reduce hits on low-clearance structures

Tennessee has one location on SR-27 that goes under I-24 in Marion County, better known as the Jasper/South Pittsburg Exit, with a low-tech warning system for overheight trucks. In advance of the … [Read more...] about Devices and early warning methods used to reduce hits on low-clearance structures

Devices and early warning methods used to reduce hits on low-clearance structures

Ohio DOT purchased Mandli's Bridge system and it is currently out on the roads checking vertical clearances. … [Read more...] about Devices and early warning methods used to reduce hits on low-clearance structures

Devices and early warning methods used to reduce hits on low-clearance structures

Oregon DOT has used an overheight vehicle warning system with two light sources and detectors mounted on poles on both sides of the roadway. When an overheight vehicle passes through and breaks the … [Read more...] about Devices and early warning methods used to reduce hits on low-clearance structures

Devices and early warning methods used to reduce hits on low-clearance structures

Connecticut DOT used signing and flashing lights to warn oversize vehicles of low clearances and positions warnings far enough back to allow vehicles to exit highway prior to clearance restriction. … [Read more...] about Devices and early warning methods used to reduce hits on low-clearance structures

Devices and early warning methods used to reduce hits on low-clearance structures

North Dakota DOT uses the standard Advance Warning sign W12-2 and places a W12-2p sign on the structure. Some structures have been hit that have the clearance signed and some of these had the required … [Read more...] about Devices and early warning methods used to reduce hits on low-clearance structures

Devices and early warning methods used to reduce hits on low-clearance structures

Nevada DOT has used an overheight alarm system with very good results on several projects in the past couple of years. The early warning allowed the overheight vehicles to be stopped and redirected … [Read more...] about Devices and early warning methods used to reduce hits on low-clearance structures

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American Road and Transportation Builders Association Transportation Development Foundation, American Road and Transportation Builders Association U.S. Department of Transportation Federal Highway Administration Texas A&M Transportation Institute