Tractor & Trailer Compliance:

A recent fatal collision on the A40 near Ganarew, Ross‑on‑Wye has brought agricultural road safety sharply into focus, highlighting two critical issues that continue to affect farms and contracting fleets nationwide: visibility and mechanical condition.

Investigators confirmed that the absence of an amber warning beacon was the primary factor, leaving motorists unable to judge the presence or speed of a slow‑moving agricultural outfit on a fast road.

Further inspections revealed multiple serious defects:

• Trailer brakes completely inoperative and not connected to the tractor

• Damaged hydraulic brake line between tractor and trailer

• Lighting cables held on with baler twine instead of proper fixings

• Trailer overloaded with straw bales

Whether you’re hauling grain, silage, straw, or machinery, ensuring your tractor and trailer are visible, connected, and braked is essential before travelling on public roads.

The 25 mph Beacon Rule: What Operators Need to Know

Any vehicle restricted to 25 mph or below must display a 360‑degree flashing amber beacon when travelling on fast dual carriageways. This applies to tractors, telehandlers, combines, and other slow‑moving machinery.

A correctly mounted beacon — ideally 1.2 m or more above ground level — gives approaching traffic the reaction time needed to slow safely.

Industry Debate: Visibility, Loads & “Farm Fixes”

The incident has reignited discussion across farming forums and social media:

1. Beacon Positioning Behind High Loads

A cab‑roof beacon often disappears behind tall stacks of straw or silage. Rear‑mounted or stalk‑mounted beacons on the trailer maintain visibility from all directions.

2. Makeshift Fixes: Why They Cause Problems

Baler twine, zip ties, bungee cords and tape are common around the yard — but on public roads they’re a liability. Temporary ties can snap or slip, letting cables drop into hitches or drawbars and causing sudden lighting failure mid‑journey.

3. Speed Ratings & Modern Tractors

Some operators argue that faster tractors change the beacon requirement. In practice, if the outfit is restricted to 25 mph or less on a fast dual carriageway, the beacon must be used.

KM Compliance Checklist for Tractor & Trailer Operators

1. Braking Integrity & Connection

A loaded trailer without functioning brakes is a major hazard.

Check that:

• Hydraulic or air lines are free from cracks, leaks, and perishing

• Quick‑release couplings lock securely

• Breakaway cables or valves are fitted and working

• Brake shoes, drums, discs and linings are inspected and adjusted

2. Amber Beacons & Road Lighting

Use high‑output LED beacons for maximum visibility.
Rear‑mount or stalk‑mount options ensure the beacon isn’t hidden behind loads.

3. Wiring, Fixings & Cable Protection

Avoid makeshift fastenings. Use:

• Weather‑sealed 7‑pin or 13‑pin sockets

• Heavy‑duty trailer lighting cables

• Rubber‑lined P‑clips or metal clamps

• Proper junction boxes and strain‑relief fittings

These prevent sagging cables, shorts, and mid‑journey lighting failure.

Get Road‑Ready with KM Parts Group & Kramp E‑Shop

Visit Us In‑Store — Chippenham Trade Counter

We stock everything needed to keep your tractor and trailer compliant:

• High‑visibility LED amber beacons (magnetic, bolt‑on, rear‑mount)

• Trailer brake components, slave cylinders, shoes, drums & couplings

• Custom hydraulic hose assemblies made while you wait

• 7‑pin & 13‑pin plugs, extension looms, LED light boards & reflectors

• Heavy‑duty cable clamps, P‑clips & weather‑sealed junction boxes

Order Online — Kramp Portal

Prefer delivery direct to your farm or workshop?
Log in to our Kramp shop to access thousands of technical spares, lighting kits, brake parts, and hydraulic components.

Final Word

Don’t rely on baler twine. Don’t tow unbraked loads.
If you’re heading onto a public road, make sure your tractor and trailer are visible, connected, and compliant.

Visit KM Parts Group in Chippenham or browse our Kramp e‑shop to keep your machinery road‑legal and ready for work.