Intersections
DESCRIPTION | UNITS | COMMERCIAL & INDUSTRIAL (1) | RESIDENTIAL | |||||
COLLECTOR | LOCAL | CUL-DE-SAC | ||||||
URBAN | RURAL | URBAN | RURAL | URBAN | RURAL | |||
PLATE 1 | PLATE 2 | PLATE 3 | PLATE 4 | PLATE 5 | PLATE 6 | PLATE 7 | ||
Maximum Approach Speed | mph | 25.0 | 25.0 | 25.0 | 25.0 | 25.0 | 25.0 | 25.0 |
Clear Site Distance(1) | FT | 400.0 | 400.0 | 400.0 | 150.0 | 150.0 | 150.0 | 150.0 |
Vertical Alignment with Intersection | % | |||||||
Level | Flat | Flat | Flat | Flat | Flat | Flat | Flat | |
Rolling | 2% Max | 2% Max | 2% Max | 2% Max | 2% Max | 2% Max | 2% Max | |
Hilly | 4% Max | 4% Max | 4% Max | 4% Max | 4% Max | 4% Max | 4% Max | |
Minimum Angle of Intersection(2) | degrees | |||||||
Level | 75.0 | 75.0 | 75.0 | 75.0 | 75.0 | 75.0 | 75.0 | |
Rolling | 90.0 | 90.0 | 90.0 | 90.0 | 90.0 | 90.0 | 90.0 | |
Hilly | 90.0 | 90.0 | 90.0 | 90.0 | 90.0 | 90.0 | 90.0 | |
Minimum Curb Radius(3) | FT | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 | 30.0 |
Centerline Offset of Adjacent | FT | |||||||
Intersections (min) | ||||||||
Local to Local (4) | 150.0 | |||||||
Local to Collector | 200.0 | |||||||
Collector to Collector | 300.0 | |||||||
Collector to Arterial | 1320.0 | |||||||
NOTES:
1) Length along each approach leg.
2) Streets shall remain in the angle of intersection for at least 100-feet beyond the point of intersection.
3) Includes all cases: Local to Local, Local-Collector, Collector to Collector, and Collector to Arterial.
4) Includes Cul-De-Sacs.