There is a city legend in Russia: if you put a CD under a windscreen, it will cheat a traffic police speed gun (stupid, I know). But, in Thailand police uses radar guns rarely, mostly far outside cities and never inside. So, why Thais put bun
ches of old CDs on motorcycles? And why they prefer to do it only with old motorcycles or motorcycles with sidecars? Because, it’s the best and the cheapest materials at hand, good to act as a motorcycle reflector! Highway codes ask to have reflectors for cases of main stoplights damage. BTW, most of Thais save money and don’t buy any lights for their custom vehicles, they suppose installing of 3-5 of old CDs is enough.
2leep.com

That’s a clever thing to do.
: )