Dynamic Phase Signal Control Method for Unstable Asymmetric Traffic Flow at Intersections

Figure 3

Possible states of opposite traffic flow in the east and west approaches when . (a) Both left-turn and through traffic flows are symmetrical. (b) Left-turn traffic flow is asymmetrical and through traffic flow is symmetrical, or vice versa. (c) Left-turn traffic flow is asymmetrical in the same direction to through traffic flow. (d) Left-turn traffic flow is asymmetrical in the opposite direction to through traffic flow.

(a)

(b)

(c)

(d)