Do you give a COURTESY WAVE to other drivers when travelling?
When I learnt to drive, I was told the wave was a FRIENDLY thing people did in country areas but it also helps prevent DRIVER FATIGUE & LOSS OF CONCENTRATION. The act of waving helps bring the drivers (both the initiator and returner) a bit of a wake up reminder. Especially when driving long distances on quieter less visually stimulating rural roads. It is easy to wander off in your own thoughts and forget to focus on the road. It is easy to stop watching the sides of the road for wildlife and livestock. Your full attention really needs to be on the road and other road users.
Why not wave at a fellow traveller and help keep both yourself and others SAFE & STIMULATED. IT COSTS NOTHING AND TAKES NO EFFORT!