Road Classification
|
Required Right-of-way
(feet)
|
Total Cartway Width
(feet)
|
Designated Parking Lanes
| |
---|---|---|---|---|
Arterial/collector (ADT>1,000)
|
Criteria to be as determined by Township with minimum 60-foot
required right-of-way, 40-foot cartway width and no parking lanes
| |||
Neighborhood collector (1,000>ADT>500)
|
60
|
28
|
None
| |
Minor neighborhood street (500>ADT>200)
|
50
50
50
|
24
30
34
|
None
1 side
2 sides
| |
Minor street (500>ADT>200)
|
50
50
50
|
22
28
32
|
None
1 side
2 sides
| |
Alley
|
20
|
12
|
None
|
Note:
| |
10 ADT = Approximately 1 dwelling unit.
| |
Refer to Exhibit 6 for Typical Roadway Details
|
Types of Streets
|
Minimum Grade
|
Maximum Grade
| |
---|---|---|---|
Arterial streets
|
As determined by the Township after consultation with the Pennsylvania
Department of Transportation
| ||
Collector streets
|
1.0%
|
7.0%
| |
Minor streets and alleys
|
1.0%
|
10.0%
| |
4.0% (for 100 feet from intersections)
|
1.0%
|
1.0%
|
Type of Street
|
Minimum Radius
(feet)
| |
---|---|---|
Arterial
|
As determined following completion of traffic studies and consultation
with PennDOT and the Traffic Engineer
| |
Collector street
|
300
| |
Minor street
|
150
|
Type of Street
|
Sight Distance
(feet)
| |
---|---|---|
Arterial
|
As required by PennDOT design criteria for the posted speed
| |
Collector
|
400
| |
Minor
|
250
| |
Alley
|
100
|
Intersection
|
Curve Radius
(feet)
| |
---|---|---|
Minor with minor street
|
25
| |
Minor with collector street
|
30
| |
Collector with collector street
|
35
| |
Any street with arterial street
|
35 or as determined after consultation with PennDOT
|
Type of Intersection
| ||||||
---|---|---|---|---|---|---|
Arterial/ Arterial
(feet)
|
Arterial/ Collector/ Minor
(feet)
|
Collector/ Collector
(feet)
|
Collector/ Minor
(feet)
|
Minor/ Minor
(feet)
| ||
Minimum distance between center lines of intersections
|
800
|
800
|
600
|
500
|
500
| |
Minimum separation of center lines for streets not in alignment
|
Must be in alignment with planned or proposed streets entering
from opposite side
|
200
|
200
|
Type of Street
|
Minimum Clear Site Triangle Side
(feet)
| |
---|---|---|
Arterial
|
150
| |
Collector
|
100
| |
Minor
|
100
|
Design Speed
| ||||||
---|---|---|---|---|---|---|
15 mph
|
20 mph
|
25 mph
|
30 mph
| |||
Minimum (feet) (no parking)
|
20
|
20
|
20
|
20
| ||
Cartway width (feet)
| ||||||
Parking 1 side
|
28
|
28
|
28
|
28
| ||
Parking 2 sides
|
34
|
34
|
34
|
34
| ||
Minimum center-line radius (feet)
|
45
|
90
|
165
|
260
| ||
Safe-stopping sight distances (feet)
|
80
|
115
|
155
|
200
| ||
Minimum rate of vertical curvature
| ||||||
Sag
|
10
|
17
|
26
|
37
| ||
Crest
|
3
|
7
|
12
|
19
|
Total Parking Spaces
|
Number of Handicapped Spaces
|
---|---|
1 to 25
|
1
|
26-50
|
2
|
51-75
|
3
|
76-100
|
4
|
101-150
|
5
|
151-200
|
6
|
201-300
|
7
|
301-400
|
8
|
401-500
|
9
|
501-1,000
|
20 plus 1 for each 100 over 1,000
|
Number of Dwelling Units
|
Area per Dwelling Unit
|
---|---|
1 to 4
|
0.05 acre
|
5 to 50
|
0.10 acre
|
51 to 100
|
0.15 acre
|
More than 100
|
0.20 acre
|