31. 之字路 double bend road
32. 之字公路 switch back road
33. 下坡危险 dangerous down grade
34. 道路交叉点 road junction
35. 十字路 cross road
36. 左转 turn left
37. 右转 turn right
38. 靠左 keep left
39. 靠右 keep right
40. 慢驶 slow
31. 之字路 double bend road
32. 之字公路 switch back road
33. 下坡危险 dangerous down grade
34. 道路交叉点 road junction
35. 十字路 cross road
36. 左转 turn left
37. 右转 turn right
38. 靠左 keep left
39. 靠右 keep right
40. 慢驶 slow