We cannot buy and use radar detector in my country because it is illegal. If I have one radar detector, I’m sure will bring it when I drive in highway to prevent police trace my car speed. Haha! I cannot do this way because once police catch me, I have to put in jail. Anyway, normally I drive in highway online 110km/h, I won’t drive fast because of safety, and another reason is scare receive summons from police. Hehe!