Speed Limiter Services
Supply, fitting, calibration and repair of speed limiters for commercial vehicles. DVA approved and fully certified.

Speed Limiter Specialists
Speed limiters are a legal requirement for certain commercial vehicles, designed to restrict the maximum speed to improve road safety and reduce fuel consumption. Corr Brothers provides complete speed limiter services from our DVA approved workshop.
Whether you need a new speed limiter fitted, calibration of an existing unit, or repairs following a fault, our experienced technicians can help.
Speed Limiter Legal Requirements
Note: Requirements apply to vehicles first registered on or after 1 January 1988 (goods) or 1 January 1988 (buses). Some exemptions apply.
Supply & Fitting
New speed limiter units supplied and professionally installed. All major brands available with full certification.
Calibration
Speed limiter calibration and verification. Official certification provided for compliance records.
Repairs
Diagnosis and repair of speed limiter faults. Electronic and mechanical systems covered.
Certification
Official speed limiter plates and documentation. Full compliance records for your fleet.
Fleet Services
Speed limiter management for fleets. Scheduled calibration and maintenance programmes.
Testing
Speed limiter function testing and verification. Pre-test checks for PSV/MOT preparation.
How Speed Limiters Work
Speed limiters work by restricting the fuel supply or engine power when the vehicle reaches its set maximum speed. Modern systems typically:
The speed limiter receives a signal from the vehicle's speed sensor or tachograph.
The unit continuously compares actual speed against the programmed maximum speed.
When the limit is reached, the system restricts fuel delivery to prevent further acceleration.
Penalties for Non-Compliance
Operating a vehicle without a required speed limiter, or with a faulty/tampered unit, can result in:
- Fines up to £5,000
- Vehicle prohibition
- Points on operator licence
- Potential criminal prosecution