A newer rumble strip design is more bicycle-friendly: 400 mm (16 in) grooves are cut into the shoulder, 150 mm (6 in) from the fog line. On a 2.4 m (8 ft) shoulder, this leaves 1.8 m (6 ft) of usable shoulder for bicyclists.
| Illustration from Oregon Bicycle and Pedestrian Plan, Oregon DOT | close window |
|
|
A newer rumble strip design is more bicycle-friendly: 400 mm (16 in) grooves are cut into the shoulder, 150 mm (6 in) from the fog line. On a 2.4 m (8 ft) shoulder, this leaves 1.8 m (6 ft) of usable shoulder for bicyclists. |
|