Section 81 at the time required under section 61 light bicycle riders are in a car or a bicycle, provided for the white lamp must point to the front of the bus, riders or pedestrians can see the car.
Section 81, in time to open fire under section 61 bicycle riders on the bus or at the point of need for bicycle lamp light car, so drivers can see pedestrians or vehicles.
Section 81 in the light of section 61 riders of bicycles in the vehicle or catering for the bicycle to light the lamp white light in front of the car to the driver or pedestrian overlooks the car.