vodacom3g
Vodacom Representative
At traffic lights you should just stop, get out of your car, pick up the stomping and either flick it back or if the window is closed you place it on the bonnet.
I do this all the time. Since years ago when someone threw a cigarette butt out of a window and it landed on my lap on my bike, I've been returning it to the offending party.
Amazing to hear their excuses when you hand them their sigarette butt back (easy enough to stop and pick it up on a bike and catch up to hand it back). "It acidentally fell out", etc.
So the 'how to enforce' is simple; cops on bikes. The problem is moving violations is just too much an effort for them. Much easier to sit next to the road and sleep till your money printing machine beeps.
Seeing people flicking butts out the window is a common as seeing people talking on their cell phones, reading the newspaper, eating breakfast or doing their makeup in the morning traffic.