§ 162-17. Street system layout.

A. 

The location of all major streets in the proposed subdivision shall conform in general alignment to the Comprehensive Plan adopted by the Planning Board.

B. 

Street right-of-way widths shall be as shown on the Comprehensive Plan, and where not shown thereon, shall be as follows:

	Street Type	Right-of-Way Width (feet)
	Major	100
	Collector	75
	Minor or local	65
	Marginal access	40

C. 

The proposed street layout shall provide for the continuation or projection of existing streets in the surrounding areas unless the Board deems such extension undesirable for specific reasons of topography or design.

D. 

Streets shall be logically related to the topography to produce usable lots and reasonable grades.

E. 

Minor streets shall be laid out to discourage through traffic, but provision for street connections into and from adjacent areas will generally be required.

F. 

Adequate street rights-of-way shall be provided as necessary where lots in the proposal are large enough to permit resubdivision or if a portion of the tract is not subdivided.

G. 

Where a subdivision abuts or contains an existing or proposed major traffic street, the Board may require marginal access streets, rear service alleys, reverse-frontage lots or such other treatment as will provide protection for abutting properties, reduction in the number of intersections with the major street and separation of local and through traffic.

H. 

New half or partial streets will not be permitted except where essential to reasonable subdivision of a tract in conformance with the other requirements and standards contained herein and where, in addition, satisfactory assurance for dedication of the remaining part of the street can be secured.

I. 

Wherever a tract to be subdivided borders an existing half or partial street, the other part of the street shall be dedicated and plotted within such tract.

J. 

Dead-end streets shall be prohibited except as stubs to permit future street extension into adjoining tracts or when designed as culs-de-sac.

K. 

Street grades.

(1) 

Street grades, wherever feasible, shall not exceed the following, with due allowance for reasonable vertical curves and with not less than 150 feet between changes of grade:

	Street Type	Maximum Grade (percent)
	Major	4
	Collector	6
	Minor or local	8
	Marginal access	8

(2) 

In order to facilitate drainage, no street grade shall be less than 0.6% when possible, but in no event less than 0.4%.