Automated Announcements of Approaching Emergency Vehicles

Pedestrians would be given advance warning.

Street intersections that are equipped with traffic lights would also be equipped with means for generating audible announcements of approaching emergency vehicles, according to a proposal. The means to generate the announcements would be implemented in the intersection-based subsystems of emergency traffic-light-preemption systems like those described in the two immediately preceding articles and in “Systems Would Preempt Traffic Lights for Emergency Vehicles” (npo-30573), NASA Tech Briefs, Vol. 28, No. 10 (October 2004), page 36.