I have been meaning to ask this for years but never get round to it.
When driving along the motorway at night, almost all of the HGVs in the oncoming direction have what appears to be two blue LED lights in the bottom centre of the windscreen. I have seen it on smaller trucks as well as the HGVs.
What is it?
When driving along the motorway at night, almost all of the HGVs in the oncoming direction have what appears to be two blue LED lights in the bottom centre of the windscreen. I have seen it on smaller trucks as well as the HGVs.
What is it?

So a 70 tonne loaded lorry will go down a hill the same speed as an empty lorry will it 