These vehicles are battery powered and very vulnerable due to their slow speed, small size and low height. Some are designed for pavement and road use and have a maximum speed of 8 mph (12 km/h). Others are for pavement use only and are restricted to 4 mph (6 km/h). Take extra care and be patient if you are following one. Allow plenty of room when overtaking and do not go past unless you can do so safely.