The same rules apply to mopeds that apply to cars, trucks, or other vehicles, with few exceptions. If you are traveling on a city street or the highway on a moped, you have the right to occupy your lane even if your speed is lower than the surrounding traffic.nnOne exception is SC’s motorcycle and moped red-light law – if you are on a motorcycle, moped, or bicycle, you are stopped at a red light for longer than 120 seconds, and it does not change, you have the right to treat the light as if it were a stop sign and proceed through the red light while exercising due care.