Type
|
Construction
|
Minimum Size
|
---|---|---|
Monument
|
Concrete
|
4 inches by 4 inches by 36 inches
|
Marker
|
Iron pipes or iron or steel bars
|
24 inches by 3/4 inches diameter
|
Figure 1: Prohibited Access
|
Figure 2: Minimum Length of Access Drive
|
Internal maneuvering area: parking areas shall provide suitable
maneuvering room so that vehicles enter the street in a forward direction.
|
Figure 4: Pedestrian Access Guidance Sketch
|
Table 370-37.1
Street Width Requirements
| |||
---|---|---|---|
Street Type
|
Cartway with Curbs
(feet)
|
Cartway with No Curbs
(feet)
|
Right-of-Way
(feet)
|
Private (rural design areas only)
|
20
|
18
|
50
|
Cul-de-sac
|
22
|
20
|
50
|
Local
|
22
|
20
|
50
|
Collector
|
28
|
24
|
60
|
Industrial
|
28
|
24
|
60
|
Arterial
|
As prescribed by the Pennsylvania Department of Transportation
| ||
Marginal access
|
24
|
22
|
40
|
Table 350-37.2
Anticipated Traffic Volume
| |
---|---|
Street Type
|
Daily Traffic Volume (ADT)
|
Private
|
0 to 40
|
Local
|
0 to 1,000
|
Collector
|
1,000+
|
Table 350-37.3
Residential Trip Generation Rates
| ||
---|---|---|
Daily Vehicle Trips per Dwelling Unit
|
Weekday
|
Peak Hour
|
Single-family detached
|
10.00
|
1.01
|
Multifamily (including apartments, townhouses and condominiums)
|
6.00
|
0.55
|
Table 350-37.4
Design Criteria for Streetsa
(Not to Include Intersections)
| |||||
---|---|---|---|---|---|
Type of Street
| |||||
Local Street
|
Collector Street
|
Industrial Street
|
Cul-de-Sacd
|
Private Street
| |
Maximum gradeb
|
8.0%
|
6.0%
|
6.0%
|
6.0%
|
8.0%
|
Minimum gradee
|
1.0%
|
1.0%
|
1.0%
|
1.0%
|
1.0%
|
Minimum center line radius
|
150 feet
|
300 feet
|
300 feet
|
150 feet
|
150 feet
|
Minimum sight distancec
|
150 feet
|
250 feet
|
250 feet
|
150 feet
|
150 feet
|
Tangent between curves
|
100 feet
|
150 feet
|
150 feet
|
n/a
|
100 feet
|
NOTES:
| |
---|---|
a
|
For arterial roads, the Township Engineer will approve the design
on a case-by-case basis.
|
b
|
Grades in excess of the allowable percentage may be approved
by the Township Engineer where it is clear that it is necessary and
that no traffic hazard is or will be created thereby.
|
c
|
Sight distance shall be measured along the center line of the
street between points where a driver's eyes at three feet six inches
in height can see an object six inches high.
|
d
|
Cul-de-sac is the entire street not merely the vehicular turnaround.
|
e
|
Modifications to any standards must be approved by the Township
Engineer prior to Township approval.
|
Table 350-37.5
Clear Sight Standards
| |
---|---|
Topography Elevation
|
Allowable Structure or Vegetation Height
|
1 foot higher than the road
|
2 feet
|
2 feet higher than the road
|
1 foot
|
3 feet or more higher than the road
|
No vegetation or structure shall be permitted within the sight
triangle
|
Size of Development Housing Units or EDUs
(units)
|
Distance to Existing System
(feet)
|
---|---|
1
|
150
|
2 to 4
|
500
|
5 to 15
|
1,000
|