My truck has 2 flashing lights on the front and one on the back. Its a tipper, and I am regularly working in roadworks areas, where you have to have your flashing lights on for safety and 'cos its the
Site Rules. However, we are all human and when you have been on site for a few hours and pull out of the works, you sometimes forget to switch them off (old age!!). In my experience, most bin lorries keep them on all the time, I think mainly because they can't be bothered switching them off for short periods, but the most annoying ones to me are tow trucks. Fair enough when they are actually towing a vehicle, but if its a flat bed vehicle and the recovered car is actually on the bed, they don't need the lights on, but still do. They are trying to warn you of a danger that isn't there and in consequence drivers become more apathetic to those lights that are there for a purpose, such as when I put mine on pulling into motorway roadworks....makes no odds, you can still reckon on a couple of cars to follow you in!