Emergency Vehicle Caution Systems (EVCS)

Additional Information


Traffic Warning & Intersection Pre-emption (Emergency Vehicle Warning Systems)

ELTEC’s Emergency Vehicle Caution Systems (EVCS) are designed to alert motorists that an emergency vehicle is departing its parking bay.

When an emergency vehicle is about to emerge from its station and enter traffic, the Emergency Vehicle Caution System provides either a CAUTION (yellow) or STOP (red) flashing beacon(s). The pole can be configured with one or two signals. The power source may be either AC or solar powered (DC).

Each system is designed to match the project requirements and street layout. Hardwired systems are available, but wireless radio activation is far less complicated; no trenching or boring to connect signals to the station activation point.

Multiple sites can be triggered simultaneously. For wireless radio systems, each receiver and transmitter are programmed with a unique address code, activating only receivers with the matching code. Any number of receivers can be set to a single address code. Advance warning signal poles can be positioned further down the road from the station exit.

There are several options to activate the flashing beacons wirelessly:

  • Wall mounted transmitter with push button in building
  • On board/console mounted push button transmitter
  • Hand-held transmitter
  • Emitter (light or infrared signal) to receiver

Once activated, the signal(s) remain ON for a preset period of time. The flashing duration is user adjustable (1 second to 100 hours).


As an option, ELTEC can provide a receiver that’s integrated into an intersection controller cabinet interrupting the controller’s normal cycle allowing the emergency vehicle ‘green light priority’ passage in the direction the emergency vehicle is traveling.

Additional Information


A typical installation of the emergency vehicle caution system consists of a central activation device in the station. Outside, two or more poles support a small cabinet that houses the electronic controls: a flasher, receiver and timer. Solar powered systems include a charge controller, battery and apole-mounted solar panel.

  • AC or DC Solar Powered
  • System Flexibility: Tailored to Meet Project Requirements
  • Programmable Timed Vehicle Exit
  • CAUTION (amber) or STOP (red) Alerts: no price difference
  • 8” or 12” Signal Heads: no price difference
  • AC: Optional Battery Back-up

When AC power is not available or practical to power the signals, solar power is the answer. ELTEC’s solar powered systems are sized by geographical location and electrical load for optimal effectiveness guaranteeing sufficient power during the long winter months. Daytime dimming of any signal is not in compliance with FHWA

To learn more about our Emergency Vehicle Caution Systems please contact us today!


  • Self Contained: No Electrical Bills
  • No Power Interruption
  • No Trenching or Boring for Cable
  • Electrical Contractors: Technicians Not Required for Installation
  • High Efficiency Self Cleaning Solar Panels
    • 20 Year Warranty
  • Choice of Mounting Rack: Side-of-Pole or Top-of-Pole
  • Solid State FS-2A Flasher
  • Controller with Display Showing: Battery Voltage, Solar Amps, Load Amps
  • No Maintenance AGM Battery (performs better in cold climates)
    • 5 Year Pro-rated Warranty
  • Sized by Computer Program: Ensures Power Generated Meets/Exceeds Load
    • No Charge for Analysis & Report
  • Flash Rate is Constant at Selected Rate: Does NOT Vary as a Function of Battery Voltage

See Emergency Vehicle with 3 Signal Heads for a ‘real life’ story.

ELTEC’s Emergency Vehicle Caution Systems meet the Federal Highway Administration’s MUTCD (Manual on Uniform Traffic Control Devices) specifications and ITE (Institute of Transportation Engineers) standards.

Whether you are looking to enhance safety with solar powered pedestrian lights or need a comprehensive solution to your traffic concerns, ELTEC has the traffic control products you need.

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