How do I measure my vehicle (with roof racks, boxes, accessories) and compare it to the barrier height to ensure safe entry?

Before entering any car park with a height-restriction barrier, it’s essential to know your vehicle’s true height — including roof racks, roof boxes, antennas, or mounted equipment — to avoid collisions and damage.

Here’s how to measure accurately:

  1. Park on Level Ground – Ensure the vehicle is on a flat surface for an accurate reading.
  2. Measure from the Ground to the Highest Point – Use a tape measure or laser measure from ground level up to the top of the roof rack, roof box, or accessory.
  3. Account for Accessories – If you use bike racks, surfboard mounts, flashing beacons, or roof boxes, include their total height — even temporary fittings count.
  4. Check the Barrier Signage – Compare your vehicle’s full height with the displayed clearance on the height-restriction barrier sign, shown in both metric and imperial units (e.g. 2.1 m / 6 ft 10 in).
  5. Allow a Safety Margin – Leave at least 100 mm (4 inches) of clearance to allow for uneven surfaces, suspension movement, or load shifts.

At Aremco Barriers, all UK-manufactured height-restriction barriers are supplied with accurate reflective signage to help drivers make safe decisions before entering. Clear visibility, proper measurement, and understanding your vehicle’s height are the best ways to prevent accidents, protect property, and avoid liability issues.