A crowd sourced, real time alert system designed specifically for high speed corridors (highways/freeways) that warns drivers to clear a lane before an approaching emergency vehicle (EV) reaches them.
​How It Works:
​Initial Report (The First Trigger)
​A driver on a highway taps Report > Hazard > Emergency Vehicle Approaching.
​To minimize distraction, this can be triggered via Voice Control.
​Direction and Speed Tracking
​Waze tags the report with the reporter's direction of travel and GPS coordinates.
​Waze's backend uses real time traffic flow data to project the EV's probable direction and speed along the highway stretch.
​Verification and Cascading Alerts:
​Drivers 1–2 km ahead in the same directional flow receive an audio/visual warning:
​"Approaching Emergency Vehicle Reported Behind You. Prepare to clear the left lane"
​A quick popup overlay asks receiving drivers to verify: [Confirm / Gone]
​Once 2 or 3 drivers confirm, the alert status changes to High Confidence, extending the alert boundary to vehicles further up the highway.
​Auto expiration:
​If drivers ahead click "Gone" or fail to confirm after the projected passage time, the alert automatically dissolves to keep the map clean.