Arterial
|
Collector
|
Minor
|
Marginal Access
|
Cul-de-Sac (Turnaround) 60-Foot Radius
| |
---|---|---|---|---|---|
Minimum right-of-way width (feet)
|
120
|
80
|
60
|
60
|
150
|
Maximum grade (percent)
|
3%
|
5%
|
10%
|
5%
|
10%; (turn-around 5%)
|
Minimum grade2 (percent)
|
0.75%
|
0.75%
|
0.75%
|
0.75%
|
0.75%
|
Minimum radius of curves (feet)
|
1,000
|
500
|
150
|
500
|
150
|
Minimum tangent length between reverse curves
(feet)
|
200
|
100
|
See Note 1
|
See Note 1
|
See Note 1
|
Maximum grades within 150 feet of center line
of intersection (percent)
|
1%
|
3%
|
3%
|
3%
|
3%
|
Minimum braking sight distance (feet)
|
300
|
200
|
200
|
200
|
200
|
Minimum distance between center-line offsets
at street jogs (feet)
|
400
|
150
|
150
|
150
|
150
|
Maximum length ofcul-de-sac 3 (feet)
|
500
| ||||
Minimum outside radius of cul-de-sacpavement
(feet)
|
60
| ||||
Angle at intersections of street center lines
(degrees)
|
90º
|
80º to 100º
|
80ºto100º
|
80º to100º
|
80º to100º
|
Minimum radius of gutters at intersections (feet)
|
25
| ||||
NOTES:
1No standard.
| |||||
2Grades under 0.75%
acceptable when approved stormwater drainage facilities are provided.
| |||||
3Except where, in
the judgment of the Planning Board, the cul-de-sac does not impose
any problem and constitutes a positive design feature.
|