Fire detection and suppression system for buses
A bus fire gives passengers very little time. A fire detection and suppression system (FDSS) senses a fire where it usually starts, in the engine compartment, warns the driver at once and releases suppressant automatically, buying the minutes needed to stop and evacuate.
Features
- Detection where fires startSensing in the engine compartment, where most bus fires begin.
- Automatic suppressionSuppressant is discharged into the engine compartment without waiting for the driver.
- Alarm for the driverAn audible and visible warning in the cab the moment a fire is detected.
- Passenger compartment alarmFire and smoke detection for the cabin, configured to the vehicle and the applicable rules.
- Retrofit to buses in serviceInstalled on existing sleeper and seater coaches as well as new builds.
- Installed and maintainedAirFi installs the system and supports periodic inspection.
How it works
- Detectors in the engine compartment sense abnormal heat or flame.
- The control unit sounds the alarm in the driver’s cab.
- Suppressant is released through nozzles in the engine compartment.
- The driver stops the bus and passengers evacuate through doors and emergency exits.
- The system is inspected and recharged before the bus returns to service.
Frequently asked questions
What is a fire detection and suppression system (FDSS) in a bus?
An FDSS detects a fire in the engine compartment, warns the driver immediately and automatically discharges a suppressant to knock the fire down, giving passengers time to leave the bus.
Is a fire detection system mandatory for sleeper buses?
Fire detection and suppression is among the safety measures reported for sleeper buses in India in January 2026, and AIS-135 is the Indian standard for these systems. Requirements depend on vehicle type and state, so confirm with your Regional Transport Office.
Can an FDSS be fitted to an existing bus?
Yes. The system is retrofitted to buses already in service. Detector and nozzle positions are set for each engine compartment layout.
Does a suppression system replace fire extinguishers and emergency exits?
No. It works alongside them. Buses still need the specified fire extinguishers, clear emergency exits with hammers, emergency lighting and a crew trained to evacuate.
What maintenance does a bus fire suppression system need?
Periodic inspection of detectors, cylinders, pipework and nozzles, and a recharge and check after any discharge. Keep inspection records for each bus.
Want Fire Safety on your fleet?
Request a demo →