[Amended 6-6-2012]
As used in this section, "driveway" includes Town ways and both
public and private rights-of-way, as well as entrance roads to any
use other than single-family or two-family dwelling units.
A. General standards.
(1) All entrance and exit driveways shall be located to afford maximum
safety to traffic, provide for safe and convenient ingress and egress
to and from the site and to minimize conflict with the flow of traffic.
(2) Any exit driveway or driveway lane shall be so designed in profile
and grading and located to provide the following minimum sight distance
in Table 7, measured in each direction. The measurements shall be
taken from the driver's seat of a vehicle standing on the exit
driveway where the front of the vehicle is a minimum of 10 feet behind
the curbline or edge of shoulder; where the height of the eye is three
feet nine inches; to the top of an object four feet six inches above
the pavement.
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Table 7
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Allowable Speed
(miles per hour)
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Required Sight Distance
(feet)
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15
|
150
|
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20
|
200
|
|
25
|
250
|
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30
|
300
|
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35
|
350
|
|
40
|
400
|
|
45
|
450
|
(3) Where a site occupies a corner of two intersecting roads, no driveway
entrance or exit shall be located within 50 feet of the point of tangency
of the existing or proposed curb radius of that site.
(4) No part of any driveway shall be located within a minimum of 15 feet
of a side property line. However, the Board may permit a driveway
serving two or more adjacent sites to be located on or within 15 feet
of a side property line between the adjacent sites.
(5) Where two or more two-way driveways connect a single site to any
one road, a minimum clear distance of 100 feet measured along the
right-of-way line shall separate the closest edges of such driveways.
If one driveway is two-way and one is a one-way driveway, the minimum
distance between them shall be 75 feet.
B. Driveways used for two-way operation shall intersect the road at
an angle of 90° or as near to that angle as site conditions permit,
but in no case less than 60°.
C. The dimensions of driveways shall be designed to accommodate adequately
the volume and character of vehicles anticipated to be attracted daily
to the development for which a site plan is prepared. The required
maximum and minimum dimensions for driveways are indicated in Table
8 below. Driveways serving large volumes of daily traffic or traffic
of over 15% truck traffic shall be required to utilize high-to-maximum
dimensions.
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Table 8
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Type of Development
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One-Way Operation Driveway Width
(feet)
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Two-Way Operation Driveway Width
(feet)
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3 to 10 dwelling units
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10 to 15
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15 to 25
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10 dwelling units or over
|
15 to 25
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20 to 35
|
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Commercial and industrial
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15 to 30
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25 to 35
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D. All driveways shall be five feet wider at the curbline, and this
additional width shall be maintained for a distance of 20 feet into
the site.
E. All driveways shall be constructed with a surface approved by the
Board.
(1) Surfaces of driveways shall extend to the paved or travel portion
of the road.
(2) Surfaces of driveways shall extend their entire length as well as
the width defined by the required driveway dimensions specified in
Table 8.
F. Driveways shall be constructed to be flat enough to prevent the dragging
of any vehicle undercarriage. If the gradient of the intersection
of the driveway and a sidewalk or road is too high and would cause
undercarriage drag, the driveway or sidewalk gradient shall be adjusted
to provide an acceptable entrance or exit.
G. Driveways shall not have a grade in excess of 15%. Driveways shall
not be located where visibility is limited because of curves, topography,
or other sight impediments.