EBPMS explained: why compliance is the floor, not the ceiling

Since April 2025, DVSA accepts only two ways to prove a trailer's brake performance: a laden roller brake test, or a compliant Electronic Brake Performance Monitoring System (EBPMS). For most operators, that turns brake compliance into a straight choice: four laden roller brake tests a year, each loaded to at least 65% of the trailer's design axle weight in line with ISO 21069, or continuous monitoring that reduces the physical testing to one. Cutting three trips to the test lane is the reason most transport managers look at EBPMS. 

What EBPMS actually does

EBPMS reads data the trailer's electronic braking system (EBS) already produces. Every time a driver brakes, the EBS records how hard the system worked and how much the trailer decelerated. EBPMS captures that data continuously, calculates real-world braking performance across a run of qualified braking events, and produces a compliance-grade report. No test lane, no trailer parked up at an Authorised Testing Facility.

Done properly, this reduces the requirement from four laden roller brake tests a year to one test annually. It reduces physical testing rather than removing it. A qualified reviewer, ‘a competent person’ in the DVSA’s terms, still reviews the report before each safety inspection: EBPMS only ever assesses the service brake, and the parking brake still needs a visual check and a tug test at coupling. That distinction matters: an operator who treats an EBPMS report as a blanket pass will still fail a roadside check.

Why brake tests are just the beginning

Fewer brake tests is the figure every EBPMS provider leads with, and it's the one most transport managers remember. The larger value sits in the data itself. A roller brake test is a single snapshot, taken once every few months, of how a trailer performed on one day. EBPMS is a continuous record of how every trailer performs on every braking event.

That record changes how a maintenance team works. Rather than waiting for a scheduled test to surface a problem, a workshop can see brake performance trending down on a specific trailer and book it in before it fails an inspection or triggers a roadside prohibition. The compliance report is the byproduct. The operational gain is knowing the condition of every trailer's brakes, every day. And the best operators know that the value goes beyond brakes. How can you not just see, but act on, the most critical data points across your fleet (EBPMS included)? How can you surface trends and early warning signs before an issue becomes a failure or roadside stop? Answering these questions is what gives operators the edge. 

Where Samsara's differs

Most EBPMS on the market come from braking-hardware manufacturers and are built around their own axles and braking electronics. They handle brakes well. Everything else on the trailer, its location, tyres, doors, temperature, and power, tends to sit in a separate system with a separate login and a separate invoice, or not be looked at at all.

Samsara's EBPMS runs through the Powered Asset Gateway as part of the Smart Trailer solution. The same connection that reads braking data also provides GPS and trailer tracking, tyre pressure monitoring, geofencing, and tamper and door alerts, in one dashboard. 

Lee Wills, Director at Conway Bailey Transport Ltd and RR Transport Ltd, said Samsara gave them a "one-stop solution" in place of the "confusing mix" of individual systems fleets have had to manage. For a maintenance team, that means brake data sits alongside everything else known about the trailer, rather than in a tool of its own.

What it adds up to

Put together, Samsara's Smart Trailer solution gives operators peace of mind and real savings at scale. Samsara estimates fleets could save up to £1,200 per trailer a year by catching braking issues early instead of reacting to failures.

But brakes are only one of the signals a connected trailer gives you. Gordons Transport uses the same Smart Trailer platform to catch a different compliance risk before it lands — overweight loads:

"Samsara's Smart Trailer alerts help us identify overweight trailers before they become a compliance issue. We've found the axle-load readings to be surprisingly accurate, giving us the opportunity to correct loading, educate drivers and sites, and avoid the fines, roadside inspections and operational disruption that can affect our operator licence." — Kevin Gordon, Workshop Manager, Gordons Transport Limited

That's the shift EBPMS opens up. April 2025 gave every UK operator a reason to adopt it: a legal way to prove brake performance with less time in the test lane. That's the floor. The ceiling is a trailer fleet you can see, understand, and maintain from one platform — keeping trailers earning, and turning compliance into everyday efficiency. The operators who get ahead won't be the ones asking how few brake tests they can get away with, they'll be the ones turning every trailer into data they can act on. 

See how the Smart Trailer solution works, or book a demo to walk through it with your own fleet in mind.