Impacts by over-height (OH) vehicles on bridges, commonly known as ‘bridge hits’, cause significant risk to safety and preservation of transportation infrastructure in the USA. Currently, available over-height vehicle detection systems (OHVDs) have specific site requirements, extremely high installation costs, and propensity for false alarms, which limit their field deployment to few locations. This study describes a new, enhanced LADAR-based OHVDs (L-OHVDs), which can be installed on the face of a structure to be protected and can measure the height of an approaching vehicle before the safe stopping distance from the structure. Built using off-the-shelf components and a patent pending optical design, it exhibits enhanced features like vehicle detection, actual height measurement, and collision prediction with no reported false alarms. The developed prototype has a detection range of 220 ft with height measurement accuracy (±0.66 inches) that is better than currently available OHVDs. This system has exceptional precision and is well suited to detect OH trucks and tractor trailers approaching a low vertical clearance bridge. With superior performance and cost-effective installation, the proposed L-OHVDs has the potential to reduce occurrences of ‘bridge hits’, thereby limiting consequences such as congestion and damages to bridge while sustaining safety of motorists.
LADAR-based collision warning sensor to prevent over-height vehicle bridge hits
IET Intelligent Transport Systems ; 12 , 7 ; 689-695
2018-05-09
7 pages
Article (Journal)
Electronic Resource
English
over-height vehicle bridge hit prevention , patent pending optical design , OH truck detection , height measurement , transportation infrastructure safety , optical information processing , off-the-shelf components , LADAR-based collision warning sensor , safe stopping distance , tractor trailers , installation costs , L-OHVDs , object detection , transportation infrastructure preservation , optical radar , cost-effective installation , over-height vehicle detection systems , road safety , optical sensors , intelligent transportation systems , optical images , image sensors , specific site requirements , collision prediction , false alarms
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LADAR‐based collision warning sensor to prevent over‐height vehicle bridge hits
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