Steer Safe - Partnership Steer Safe - Partnership

About Intelligent Speed Assistance Devices

A speedometer
An Intelligent Speed Assistance device

What is an Intelligent Speed Assistance device?

An Intelligent Speed Assistance (ISA) device is an after-market device that uses GPS technology to recognize speed limits and prevent the driver from operating beyond a pre-set limit as determined by state policy.

What is an Intelligent Speed Assistance Program?

While beneficial for all road users, ISA devices are particularly useful for repeat speeding offenders. Typically, people who are repeatedly convicted of speeding or driving recklessly face the loss of their driver's license, resulting in job losses and family stress. This technology provides a life-saving, rehabilitative alternative.

How Intelligent Speed Assistance Devices Work

  • real-time

    GPS-powered detection.

    ISA devices use real-time GPS data to identify posted speed limits on every road, cross-referencing onboard maps for accuracy.

  • safe speeds

    Automatic speed control.

    ISA devices gently restrict acceleration once the vehicle reaches the pre-set limits and maintains safe speeds without harsh braking.

  • overrides

    Safety flexibility.

    ISA devices allow temporary configurability for merging and passing, preserving driver control in emergencies.

  • monitoring

    Data privacy + compliance.

    Speed data is shared only with state monitoring agencies. The device's tamper-proof design alerts authorities if disconnected.

Proven Results

ISA reduces speeding violations by up to 99% in fleets (like London buses) and cuts crash risks by 37%.

What is the process of having an ISA device installed, monitored and removed?

  • Installation

    An ISA device is installed by a certified technician. It connects to the vehicle’s engine control unit and is calibrated for accurate speed monitoring.

  • Monitoring

    The device tracks speed in real-time using GPS and vehicle data. It restricts speed if limits are exceeded. Data is only shared with the state monitoring authority.

  • Removal

    After the mandated period ends, a technician removes the device. Some jurisdictions require a compliance report before full license reinstatement.

A London bus on Whitehall Street

Frequently Asked Questions

  • The program includes three standard fees:

    1. Installation: About $150 one-time fee
    2. Monthly: Approximately $4/day
    3. Removal: About $100 one-time fee

  • Yes, the device is compatible with all modern vehicles, including hybrids, EVs, and push-to-start ignitions. However, installation on older models (pre-2000) may require additional equipment and could take longer due to variations in vehicle technology.

  • No. The ISA device does not require calibration. The system has tamper protection: if disconnected, its internal battery lasts a few minutes while cellular alerts are sent. Tamper alerts require an inspection before further driving - similar to ignition interlock recall protocols.

See all FAQs
Aerial view of a red car driving through trees