The electric drive system on the ebike can only be activated through a pedaling action and is limited to relatively low speeds. The sensor usually measures pedal movement, pedal torque or bicycle speed (sometimes all three) and sensors are located in the bottom bracket, rear hub or rear wheel. In parts of Europe this class is limited to 15 mph (25 kph) with motor wattage <= 250 watts. In America, because of our more liberal vehicle definition, this class is limited to a motor powered speed of 20 mph (32 kph) with motor wattage of <= 750 watts. Due to the low speed of operation and required pedaling action this class should benefit from the same rights and access privileges as non-assist bicycles and should be able to be used on streets, bike lanes, multi-use bike paths and off-road trails.