Why is there more risk involved in overtaking a lorry than a car:
Because lorries are slower than cars
Because a lorry is heavier than a car so the brakes are not as good
Because a lorry is longer than a car
Explanation: A driver may overtake to the left of a vehicle displaying a DO NOT OVERTAKE TURNING VEHICLE sign, only if it is safe to do so. You need to be careful of all large, heavy vehicles that are turning. If you put your vehicle in the path of a turning vehicle you may be crushed.
