Frequently asked
questions

Priority One is Greenwave Techlabs' intelligent emergency vehicle preemption system. It detects approaching emergency vehicles in real time and coordinates traffic signal changes across intersections — clearing a green corridor before the vehicle arrives, reducing response times and minimising collision risk at signalised junctions.

Priority One uses a multi-modal detection approach that fuses data from acoustic sensors (siren detection), optical/visual inputs, GPS positioning from the vehicle itself, and V2I (vehicle-to-infrastructure) radio communication. The fusion layer resolves conflicts between sensors, so the system remains reliable even when one channel is degraded.

Once a vehicle is detected, the system calculates its projected route and propagates preemption commands upstream — signalling each intersection in sequence to clear green phases ahead of the vehicle's arrival time. Adjacent intersections hold cross traffic, and signals return to normal adaptive cycles immediately after the vehicle clears each junction.

The acoustic classifier is trained specifically on authorised emergency vehicle sirens (ambulance, fire, police) and filters out similar sounds such as car alarms, construction noise, and musical horns. The multi-modal fusion layer further requires corroboration from a second channel before issuing a preemption command, keeping false trigger rates extremely low.

No. The system is designed to layer on top of existing SCATS, SCOOT, and proprietary adaptive signal controllers via a standard preemption interface. In most deployments only a small roadside unit and sensor cluster need to be installed — the existing cabinet and controller remain in place.

Yes. Priority One is designed for signalised intersections in dense urban grids, but the detection and coordination engine also supports highway merge ramps, tunnel portals, and level crossings where signal preemption is used. Configuration profiles are provided for each environment type.

The current architecture supports corridor-level deployments of 20–80 intersections managed by a single regional coordination node. Multi-node configurations can cover city-wide networks. Horizontal scaling is achieved by partitioning corridors and federating coordination nodes — performance benchmarks are available upon request.

Priority One is being developed in alignment with NEMA TS-2 / ITE preemption guidelines, AIS 140 (India), and IEC 61508 functional safety principles. Specific certification status varies by deployment region — please contact us for the compliance documentation relevant to your jurisdiction.

Every intersection controller reverts to its programmed fail-safe state (typically all-red, then resume adaptive cycle) if communication with the coordination node is lost. The preemption unit includes a local watchdog that ensures the signal never stays locked in an abnormal phase. Redundant power rails are supported for critical sites.

No personally identifiable data is collected. The sensors classify vehicle type and estimate position — they do not capture faces, licence plates, or occupant identities. Only aggregate traffic flow metrics and anonymised event logs are stored for system diagnostics and performance reporting.

Submit an inquiry through our contact form or use the "Ask a question" form below, describing your corridor or intersection of interest, the type of emergency services involved, and your timeline. Our team will respond within 48 hours to schedule a technical discovery call and propose a pilot scope.

Pricing is scoped per deployment based on intersection count, existing infrastructure compatibility, and support tier. We offer a staged engagement model — small corridor pilots are priced to be low-risk, with full network deployments contracted separately once pilot KPIs are validated. Reach out for a detailed proposal.