C3FT is a sonar device that is attached to a police biker's handlebars, to provide proof of drivers infringing on the three-foot zone.
SmartSign - K-7590-SFT-14 Slow Moving Vehicle ASAE S276.4 Sign
Vision-based safety tech gives drivers instant feedback
Minority Report system for drivers improves road safety - Springwise
Self-Driving Cars Expert Witness: Physics Drives the Technology
Sonar device keeps cars at a safe distance from cyclists - Springwise
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Smartphone app warns drivers about road hazards - Springwise
Smart device warns cyclists about upcoming road hazards - Springwise
This Playground Absorbs Children's Soul! Oh, We Mean Energy.