The street design standards and construction specifications herein are regarded as minimum standards and specifications. These standards were developed giving high priority to the safety and durability of future Township streets. Where the provisions of this chapter and any other ordinance conflict, the provisions of this chapter shall prevail. However, the Township reserves the right to require designs in excess of these standards when conditions warrant it, and also to approve alternate designs when proven to the Township Engineer that they are equal or better in design.
A. 
These design standards have been developed from the following references:
(1) 
Guidelines for Design of Local Roads and Streets, Commonwealth of Pennsylvania, Department of Transportation Pub. 70, April 1983 Edition, or latest publication.
(2) 
Geometric Design Guide for Local Roads and Streets, Part I, 1970, AASHO, as amended.
(3) 
A Policy on Geometric Design of Rural Highways (1965), AASHO, as amended.
B. 
When conditions warrant designs not covered by the standards herein, the design shall conform to the standards set forth in the references. The Township Engineer will interpret and approve all design standards.
C. 
Streets shall be designed for a twenty-year service life. If a street is to be utilized prior to complete construction, the utilized portion must be structurally designed to support all anticipated loading without significant loss of the designed service life of the street.
D. 
Parking and bike lanes shall be provided where required by the Township.
E. 
Drainage design shall be in accordance with PennDOT DM 2 to Township Code Chapter 175, Stormwater Management, as amended. The owner shall provide the Township with completed calculations and drawings for sizing and locating of all piping and inlets, as amended.
F. 
Special consideration for future bus and truck routes must be taken into consideration in the design of streets for pavement thickness and width, sight distances and curb radius.
G. 
Intersection designs will be reviewed on a case-by-case basis for inclusion of turning lanes, medians, acceleration and deceleration lanes and traffic control devices.
The Table of Design Standards is included as an attachment to this chapter.
Neighborhood streets shall meet all the design standards of a local street, except for the criteria and restrictions described below:
A. 
Can serve only a residential use.
B. 
Must be a nonthrough street, i.e., a street that serves only the adjacent residences.
C. 
The minimum center line horizontal curvature shall be no less than 107 feet.
D. 
Sidewalks are required pursuant to § 180-16.
E. 
Sight obstructions that do not meet twenty-mile-per-hour design requirements as described by § 177-18A are prohibited. Areas where obstructions would conflict with sight distance on the inside portion of horizontal curves must be shown on the plan.
F. 
The streets must be posted at either 15 miles per hour, or five miles per hour lower than the design speed determined by the designer.
G. 
There can be no straight stretches of road longer than 300 feet.
H. 
The developer must show that each residence can provide a minimum of two off-street parking spaces.
I. 
No on-street parking is allowed.
J. 
The development must provide an additional off-street common parking area within the development to accommodate one parking space per five units.