Yesterday traffic sensing includes passive surveillance of the roads, counts number of vehicles per unit time relative to the time of day, measures average speed, measures passage per traffic light changes.Offline studies and planning will then take place.

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Today traffic sensing includes, in additions, individual cars relative to pedestrians and cyclists, alerts non line-of-sight vehicles approaching, estimates time-to-impacts between vehicles without interventions, and broadcasts sudden braking affected cars.  

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Tomorrow traffic sensing includes situational awareness intelligence to be broadcast to proximity vehicles, supports traffic impacted time-to-arrival estimations, relates relevant telemetic and air quality, ai traffic patterns, fine-tunes individual speeds, accumulates carbon credits, and eliminates traffic signaling.

 

Any roadside infrastructure needs intelligent sensing and adhoc networking.