In order to encourage the sound development of street frontage,
the following special regulations shall apply:
A. Access barrier. Access to the streets shall be controlled in the
interest of public safety. Each building or group of buildings used
for nonresidential purposes, and its parking or service areas shall
be physically separated from the highway by a curb and a low planting
strip or other suitable barrier of not less than 10 feet in depth
along an arterial street and five feet in depth along all other streets
against unchanneled motor vehicle access or egress except for accessways
authorized herein.
B. Accessways. Each permitted use shall not have more than the number of accessways permitted in the schedule in §
450-7 of Chapter
450, Zoning, for that use. Insofar as practicable, the use of common accessways by two or more permitted uses shall be provided in order to reduce the number and closeness of access points along the streets and to encourage the fronting of commercial and industrial structures upon a marginal street and not directly upon a public collector or arterial.
C. Spacing. Where two or more driveways connect a single site to any one road, unless otherwise stated in §
450-7, a minimum clear distance of 100 feet, measured along the right-of-way line, shall separate the closest edges of any two such driveways.
D. Driveways, prohibitions. No entrance or exit driveway shall be located
on the following portions of any collector or arterial road: on a
traffic circle; on a ramp of an interchange within 50 feet of the
beginning of any ramp or other portion of an interchange; nor on any
portion of such road where the grade has been changed to incorporate
an interchange. No driveway on a collector or arterial shall be designed
so that a car would have to back into a street.
E. Intersections.
(1) Driveways used by vehicles in one direction of travel (right turn
only), shall not form an angle smaller than 90° with a collector
or arterial road, unless acceleration and deceleration lanes are provided.
(2) Two-way driveways shall enter the street or road right-of-way at
a 90° angle.
F. Acceleration lanes. Where a driveway serves right-turning traffic
from a parking area providing 200 or more parking spaces, and/or the
abutting road is classified as an arterial or collector road, an acceleration
lane shall be provided in accordance with "A Policy of Geometric Design
of Rural Highways," American Association of State Highway Officials.
G. Deceleration lanes. Where a driveway serves as an entrance to a land
development providing 50 or more parking spaces, a deceleration lane
shall be provided for traffic turning right into the driveway from
any arterial or collector road. The deceleration lane shall be at
least 200 feet long and 13 feet wide, measured from the abutting roadway
curbline. A minimum forty-foot curb return radius shall be used from
the deceleration lane into the driveway.
H. Where a site occupies a corner of two intersecting roads, no driveway
entrance or exit may be located within a minimum of 50 feet from the
intersection boundary lines.
I. Widths. The dimensions of driveways shall be designated 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
are indicated in the accompanying table. 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
|
Two-Way Operation
|
---|
|
Curbline Opening
(in feet)
|
Driveway Width
(in feet)
|
Curbline Opening
(in feet)
|
Driveway Width
(in feet)
|
---|
Trucks
|
25%
|
25%
|
25%
|
25%
|
25%
|
25%
|
25%
|
25%
|
5 to 10 family residents
|
12 to 15
|
10 to 13
|
12 to 30
|
10 to 26
|
10 family or over
|
12 to 30
|
10 to 26
|
24 to 36
|
20 to 30
|
Commercial and industrial
|
24 to 50
|
24 to 34
|
24 to 50
|
24 to 46
|
Service station
|
15 to 36
|
12 to 34
|
24 to 36
|
20 to 34
|
J. Sight distance. Any exit driveway or driveway lane shall be designed
to permit the following maximum sight distance measured in each direction
along any abutting Township, county or state road; the measurement
shall be from the driver's seat of a vehicle standing on that portion
of the exit driveway that is immediately outside the edge of the road
shoulder:
Allowable Speed on Road
(mph)
|
Required Sight Distance
(in feet)
|
---|
25
|
150
|
30
|
200
|
35
|
250
|
40
|
300
|
45
|
350
|
50
|
400
|
K. Surfaces. The surface of any driveway subject to Township site plan approval shall be constructed with a permanent porous or nonporous pavement of a type specified by standards set by the Township Engineer. Such pavement shall extend to the paved travelled way or paved shoulder of the road and such pavement shall extend throughout the area defined by the required driveway dimensions specified in §
400-20I above.
L. Grades. Any vertical curve on a driveway shall be flat enough to
prevent the dragging of any vehicle undercarriage. All driveway profiles
and grades shall be submitted to and approved by the Township Engineer.
However, no driveway grade shall exceed 8%.
M. 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 should be appropriately lowered to provide a suitable
ramp gradient.
N. Drain pipes. Where curbing does not exist and conditions warrant,
an adequate drain pipe shall be installed as determined by the Township
Engineer.
O. Customer service areas. Any site plan that proposes temporary stopping
space or maneuvering space for vehicles of customers or patrons seeking
service at a roadside business establishment should be so designed
that the stopping or maneuvering space will be at least 10 feet removed
from the right-of-way line of the adjacent street or road.
P. Refuse disposal. Refuse depositories shall not be exposed to public
view and shall be nonpolluting, covered from weather and secure from
vandalism. Compactor units shall afford completely sealed operation
and efficient access by collection vehicles.
See general development standards and requirements in planned unit development, §
400-12.