Blockage-free driving method

[0009] Specific implementation: in figure 1 In the illustrated embodiment, the left-turning vehicle passes through C under the overpass (6) at H and turns right into the adjacent road (3) ahead, then turns right into the adjacent right road (2), and finally turns right into the horizontal Road (1), the direction of the vehicle at this time is to the left, and then go straight across the road (5) where the vehicle was originally located on the overpass (6), and the left turn action is completed; while the through vehicles HC and DG pass directly under the overpass (6), Through cars BE, FA pass directly on the overpass (6), and turn right cars BC, DE, FG, HA pass directly on the side of the overpass (6). The left turn in the other 3 directions is similar to this, and will not be repeated here, and the overpass (4) can be set up at each intersection as needed.