Utah’s Department of Transportation (UDOT) has begun using laser-based LiDAR to help make roads safer. This Light Detection and Ranging utilizes eye-safe laser beams to generate detailed 3D representations of intersection scenes to help determine where problems exist in intersections.
UDOT may also use LiDAR to detect red light violations, near-miss incidents, jaywalking patterns and typical pedestrian pathways, including average walking speeds. Determining average walking speeds will help engineers adjust signal timing to extend crosswalk durations based on pedestrian behavior as well as accommodating cyclists.
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While prior detection devices only granted engineers a view of the stop line, LiDAR uses eye-safe laser beams to recreate an entire scene—including vehicle, pedestrian and cyclist movement—in 3D. This provides traffic engineers with a complete view of an intersection, including several hundred feet in each direction,” said UDOT.
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