Large Goods Vehicle (LGV) Theory Practice Test

At high speeds, what effect can uneven weight distribution have on braking?

Decreasing stopping distance Increasing stopping distance No effect Improving grip

Correct Answer:

Increasing stopping distance

Explanation:

The main idea is that braking relies on friction between the tires and the road, which depends on how much load each tire carries. When weight is uneven, some wheels have less normal load, so they can generate less friction before their grip is reached. That means those wheels contribute less to slowing the vehicle, and the overall braking effort isn’t as effective as it could be. At high speeds this is especially problematic because small losses of grip become more significant and weight transfer during braking can worsen the imbalance, further reducing traction on the lighter wheels. The net result is a longer stopping distance. Keeping cargo evenly distributed helps maintain balanced grip across all wheels, improving braking performance.

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