Seems silly to say, but there is nothing worse than travelling for hours with the sun glaring in your eyes.
If you wear expensive glasses that are made of glass consider making sure that the visor is down over the glasses. The last thing
you want is a stone hitting your glass sunglasses and the galss fragments going into your eyes.
Most builders warehouses carry a range of quite zooty safety glasses that are designed to take impacts from flying debris.
The consiquence of getting
dirt in your eys is that you have to close your eyes and drift off the road ........