I used to drive truck through Europe back in the 80's and over there most freeways are divided by an anti dazzle fence.
Cars cannot see each other on oposite sides so they often drive on high beam and with extra driving lamps. So a truck driver gets blinded due to sitting higher.
I installed a few 24 volt 100 watt pencil beam lamps to the top of the cab roof pointed slightly to the left and down a bit. When i was blinded by these morons I lit up the 100 watters...instant gratification.
I see a lot of trucks are now so fitted over there now.....guess the problem still exists.
http://www.bizbuzzmedia.com/blogs/big_lorry_blog/archive/2007/4/3.aspx
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