The purpose of this article is to set certain standards for
the design and location of driveways in order to promote the safety,
public health, convenience and general welfare of the community.
As used in this article, the following terms shall have the
meanings indicated:
DRIVEWAY
The main access or accesses leading to the primary use of
the land, whether it is a residential, industrial, commercial, recreational,
agricultural or other use.
The number of driveways permitted from a proposed lot or site
directly to any road in the Township shall be limited as follows,
except under conditions where the safety and/or convenience of the
general motoring public is impaired. Such conditions shall be determined
and specified by the Township Land Use Board upon receipt of advice
from the Township Engineer.
Length of Lot or Site Frontage
(feet)
|
Permitted Number of Driveways
|
---|
150 or less
|
1
|
More than 150 to 800
|
2
|
The geometric design of a driveway connection to a road in the
Township should be governed by sound traffic engineering principles.
Below are guidelines in preparing a geometric design, but deviation
from them will be necessitated from time to time due to the many variables
encountered in the course of preparing a design. The applicant should
be aware, therefore, that although the driveway layout may conform
to these guidelines conditions may dictate deviations from them, and
requirements of the Township Engineer shall be final.
A. Two-way operation. Driveways used for two-way operation will intersect
the Township road at an angle to as near 90° as site conditions
will permit and in no case will be less than 60°.
B. One-way operation. Driveways used by vehicles in one direction of
travel (right turn only) shall not form an angle smaller than 45°
with a Township road.
C. The dimensions of driveways shall be designed to adequately accommodate
the volume and character of vehicles anticipated to be attracted daily
onto the land development for which a site plan is prepared. The required
maximum and minimum dimensions for driveways connecting to a Township
road at 90° are indicated below. Driveways serving large volumes
of daily traffic or traffic over 25% of which is truck traffic shall
be required to utilize high to maximum dimensions. Driveways serving
low daily traffic volumes or traffic less than 25% of which is truck
traffic shall be permitted to use low to minimum dimensions.
|
One-Way Operation
|
---|
|
Type of Driveway
|
Driveway Width
(feet)
|
Depressed Curb
(feet)
|
Curb Return Radius
(feet)
|
---|
|
|
|
|
Minimum
|
Maximum
|
---|
|
5- to 10-family residence
|
12 to 15
|
32 to 35
|
20
|
30
|
|
Over 10-family residence
|
15 to 18
|
35 to 38
|
20
|
30
|
|
Commercial and industrial
|
15 to 30
|
35 to 50
|
35
|
45
|
|
Service station
|
20 to 30
|
35 to 50
|
20
|
35
|
|
Two-Way Operation
|
---|
|
Type of Driveway
|
Driveway Width
(feet)
|
Depressed Curb
(feet)
|
Curb Return Radius
(feet)
|
---|
|
|
|
|
Minimum
|
Maximum
|
---|
|
5- to 10-family residence
|
20 to 26
|
44 to 50
|
20
|
30
|
|
Over 10-family residence
|
24 to 30
|
46 to 52
|
25
|
35
|
|
Commercial and industrial
|
30 to 50
|
50 to 70
|
35
|
45
|
|
Service station
|
40 to 50
|
50 to 60
|
20
|
35
|
|
NOTE: Driveways connecting to a Township road at an angle shall
have the same widths as shown in the table above. The width of depressed
curb and the radius of curb returns shall provide for the sharpest
turning radii of vehicles using the driveway, keeping said vehicles
within their prescribed lanes.
|
D. Any vertical curve on a driveway shall be flat enough to prevent
the dragging of any vehicle undercarriage. The maximum permitted gradients
for driveways are shown in Figures 1 to 4. The profile dimensions given beyond the sidewalk are maximum
for grades and minimum for grade lengths.
E. Should the sidewalk be so close to the curb at a depressed curb driveway
as to cause the ramp to be too steep and be likely to cause undercarriage
drag, the sidewalk shall be appropriately lowered to provide a suitable
ramp gradient.
[Amended 9-3-1981]
The surface of any driveway subject to Township site plan approval
shall be constructed with a permanent pavement of a type specified
by standards set by the Township Engineer, and such pavement shall
extend throughout the area defined by the required driveway dimensions
specified above.
No driveway shall be permitted to be constructed over or across
the normal drainage gutter line of an existing street.