Three., Driving backward and forward gear bag . Backward and totaling not more than 7 times trunk perpendicular to the edge. No climbing or extreme way .
3. driving a car backward into the song . Change gears forward and reverse together no more than 7 times automobile must be perpendicular to the edge. Do not climb or fall edge on
3. The drive back into its case change gears forward and backward as well as each other. No more than 7 times must be perpendicular to the edge of the end of a year, or not, is not excessive,