– Why do HGV/Semi trucks feel the need to overtake each other when they’re cruising at a very similar speed?

Question

– Why do HGV/Semi trucks feel the need to overtake each other when they’re cruising at a very similar speed?

In: Other

Answer 1

UK here, so perspective is from British roads.

If a truck slows down on the motorway, getting back up to speed uses a considerable amount of fuel.
The cost of fuel in the UK is so high (and a real problem to the haulage industry), that it’s created an imperative for lorry drivers to maintain speed no matter what.
When you see 2 lorries on a British road side by side, one fighting to overtake the other, it’s because they can’t afford to reduce speed – or rather, can’t afford to speed up again afterwards.