Variable-speed control for vehicle

摘要

An electric scooter (10) is disclosed that has a propulsion system switchable between two modes, one of which allows a higher maximum speed than the other. The mode is selected by a user-operated button (42) so constructed that the high-speed mode is selected only while the user continues to operate the switch. A steering sensor (44) and a tilt switch (48) are provided, which prevent the user from selecting the high-speed mode while steering sharply or while going down or across steep slopes.