Durite Smart AI Low Bridge Detection System
Bridge strikes remain a significant risk for HGV operations, causing delays, infrastructure damage and operational disruption. Network Rail highlights the scale of the issue:
"Between April 1 2021 and March 31 2022 there were 1,833 bridge strikes reported across the network."
Network Rail – The risk of bridge strikes
The Durite Smart AI Low Bridge Detection System is a tractor-unit mounted driver-assistance tool that combines an AI-enabled forward-facing camera, high-accuracy GPS and a UK low-bridge database. The driver inputs the overall travelling height, and the system issues visual and audible alerts if a low structure ahead appears incompatible with that height.
Key benefits
- Provides early warnings of upcoming low bridges.
- AI camera identifies height-restriction signage and low structures.
- 10 Hz GPS links with a UK low-bridge database for location-based alerts.
- R-Watch in-cab display provides colour-coded visual alerts and audio warnings.
- Driver-entered height ensures compatibility with tractor, trailer and load configuration.
- Optional DVR compatibility where operators use in-cab recording systems.
Why low-bridge detection matters
A single bridge strike can lead to:
- Damage to the vehicle and load.
- Costly repairs to public infrastructure.
- Road and rail closures with impact on timetables.
- Financial claims for delays and damage.
- Regulatory scrutiny and reputational impact.
Network Rail's 'Wise Up, Size Up' campaign emphasises the importance of height awareness:
"I'd urge drivers to properly plan their routes, know the height of their vehicles ... and always look out for road signs showing the height restrictions for bridges."
Network Rail – Wise Up, Size Up campaign
The system does not replace route planning, accurate height measurement or driver training, but provides an additional safeguard during real-world operations.
How the system works
The system is installed in the tractor cab and operates independently of the trailer. It comprises:
- AI-equipped camera
The camera monitors the road ahead and uses AI recognition to identify low-bridge structures and height-restriction signage. - High-accuracy GPS with UK bridge database
The system cross-references vehicle position with known low structures to provide early warnings. - R-Watch in-cab display
The display provides visual indicators that escalate from advisory to critical, supported by audible alerts. - Height entry keypad
The driver inputs the overall travelling height so that alerts reflect the current tractor, trailer and load configuration.
Where fleets use compatible DVR equipment, the AI camera can be connected to support evidence gathering and incident review.
Driver alerts and behaviour
- Normal: no conflict detected; the display remains clear.
- Advisory alert: possible low-bridge risk; the driver should reassess the route.
- High-risk alert: potential height conflict; the system escalates warnings to advise the driver to stop and avoid a strike.
The system supports safer driving practices but does not override driver judgement or official traffic signage.
Operational considerations
- Accurate driver-entered height is essential.
- Effectiveness depends on up-to-date bridge data and clear GPS reception.
- Temporary works or unrecorded structures may not always be detected.
- Should be used alongside formal route planning and height-awareness procedures.
FAQs
Is this system fitted to the tractor unit or the trailer?
The system is designed for installation in the tractor cab and does not require trailer integration. The driver inputs the overall travelling height, including tractor, trailer and load.
Does it replace the need for formal route planning?
No. It is an in-cab assistance tool and does not remove the need for height-aware route planning, signage compliance or driver training.
Does the system automatically measure trailer height?
No. The driver must input the correct overall height and update it when the trailer, suspension setting or load configuration changes.
Can it work with DVR systems?
Yes. Some fleet DVR systems are compatible, allowing the AI camera feed to be recorded for incident review or evidence purposes.
Will it help reduce insurance costs?
It can support an operator's risk-management strategy, but insurers assess overall risk profile and claims history. It should not be relied upon alone to reduce premiums.
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