Electronic Brake Performance Monitoring System (EBPMS)

BPW idem Telematics EBPMS provides real-time, continuous monitoring of the braking performance of tractor-trailer combinations. Here’s how it works:

• Braking Event Monitoring: EBPMS uses data from the trailer's electronic braking system (EBS) during braking events. Each event is analysed by comparing the trailer’s brake response to the deceleration of the combination. 

• Braking Demand: The system measures the pressure on the service coupling (or equivalent electrical signal), which indicates how much braking the driver and tractor unit are expecting.

• Performance Calculation: EBPMS combines the EBS results with data from the telematics system to determine the change in speed over distance and time, in order to establish a deceleration rate for that specific braking event.

• Automated Reporting: Once processed, the EBPMS data becomes available as a braking performance report to identify trends and detect potential braking issues early, improving maintenance scheduling and reducing unexpected downtime.

All braking events are monitored, but only those meeting specific criteria suitable for reliable analysis are used to report on braking performance.

According to the DVSA’s Guide to Maintaining Roadworthiness, the following procedure will be acceptable to assess the parking brake function when a trailer is fitted with an EBPMS.

1. Confirm that the EBPMS system is working correctly, and that sufficient data is being captured to record the brake performance.

2. Check the EBPMS data shows the brakes are functioning within the system’s accepted limits (45% for service brake).

3. During safety inspections, a competent person must assess all parking brake components to ensure they are functioning correctly.

4. Ensure drivers perform a tug test when coupling the trailer to the tractor unit. This not only checks the kingpin security but also confirms that the parking brake is functioning, which should be evidenced either during the safety inspection or within 14 days beforehand, with documented proof required.

5. Inspect the driver’s defect reports for any problems with the system’s operation.

If there is any doubt about the parking brake performance, further tests must be conducted.

BPW idem Telematics EBPMS provides numerous advantages for fleets, including:

• Reduced Testing Frequency: EBPMS can be programmed to generate reports in line with a fleet’s maintenance schedule, reducing the need for a laden roller brake test (RBT) to just once a year during the annual MOT inspection (depending on maintenance schedule).

• Enhanced Safety: Continuous monitoring enables early detection of brake problems, decreasing the chance of safety-critical failures. 

• Operational Efficiency: Minimises downtime by issuing alerts before brake failures, enabling proactive maintenance. 

• Data-Driven Decisions: Fleet managers gain deeper insights into brake performance, helping to optimise fleet management.