|Python CB-R15 can be mounted underneath the car and is weatherproof. It gives you priority over other vehicles at an intersection. It costs around 1,800 CNY on Ebay.|
It has come to light that buses in Europe use a special type of gadget to speed up waiting time at traffic lights. The gadget, which is manufactured in China and takes shape as a simple box, is permanently mounted underneath the vehicle. The metal sensing lines built into the road then recognises the special signal and gives the vehicle priority over other road users.