- The addition of passing lanes on two-lane roads can improve traffic operations and minimize motorist frustration by giving faster-moving vehicles a designated lane in which to bypass slower traffic. Table 16.1 lists design parameters for passing lane length and distance between passing lines.
| Table 16.1 Design Guidelines for Passing Lane Length | |||
|---|---|---|---|
| ADT (vpd) | Recommended Passing Lane Length (Miles) | Recommended Distance Between Passing Lanes (Miles) | |
| Level Terrain | Rolling Terrain | ||
| ≤ 1,950 | ≤ 1,650 | 0.8 – 1.1 | 9.0 – 11.0 |
| 2,800 | 2,350 | 0.8 – 1.1 | 4.0 – 5.0 |
| 3,150 | 2,650 | 1.2 – 1.5 | 3.8 – 4.5 |
| 3,550 | 3,000 | 1.5 – 2.0 | 3.5 – 4.0 |
CONTACT:
Chris VanDyke
Research Scientist | Program Manager
chrisvandyke@uky.edu
