§ 123-34. Street intersections.

All street intersections under the jurisdiction of Lower Providence Township shall be subject to the requirements of this section.

A. 

No more than two streets shall intersect at the same point.

B. 

Three-way and four-way intersections. Three-way or T intersections shall be used instead of four-way intersections unless the four-way intersection can be justified in terms of necessary and desirable through traffic movements or to avoid creating streets that are offset at less than the required distance.

C. 

Corrective changes to existing intersections. When existing streets intersect at odd angles or have more than four approaches, the applicant shall make corrective changes to bring the intersection into compliance with this Part 1, as required by the Supervisors, who shall first seek the advice of the Township Engineer and Planning Commission and other technical advisors and agencies, as appropriate. For state and county highways, corrective changes shall comply with the requirements of the appropriate agency.

D. 

Angle of intersections. All intersection approaches shall be designed at right angles whenever practicable. There shall be no intersections with primary or secondary arterials of less than 75% and there shall be no intersections of less than 60% for all other streets, measured at the center-line intersections.

E. 

Intersection spacing. Street intersections shall be spaced minimum distances apart as specified for the street classifications listed below, whether on the same or opposite side of the street. The minimum distance between intersections shall be measured along the higher classification intersecting street and shall be measured between the center lines of intersecting streets.

	Type of Street	Spacing (feet)
	Urban semicontrolled access	600
	Rural semicontrolled access	1,200
	Collectors	600
	Feeders	400
	Residential	200
	All other streets	200

NOTE: Intersections may be spaced as close as 400 feet if necessary and/or preferable in terms of sight distance and accepted traffic safety standards.

F. 

Sight triangles. Proper sight lines, as provided by current regulations of the Pennsylvania Department of Transportation, shall be maintained at all intersections of streets. Clear sight triangles shall be maintained along all approaches to all intersections and shall be measured along street center lines, from their point of intersection, as listed below, for each lot:

	Type of Street	Distance (feet)
	Semicontrolled access	125
	Collectors and feeders	100
	All other streets	75

NOTE: Where streets of differing classifications intersect, the dimension for the higher classification street shall be used.

G. 

Obstructions within sight triangles. Within the area of clear sight triangles, obstructions to visibility shall not be permitted within the following ranges of height:

(1) 

For primary and secondary arterials and streets serving industrial uses: from curb height to a minimum height of 12 feet.

(2) 

For nonarterial streets not serving industrial uses: from curb height to a minimum height of eight feet.

(3) 

Ground cover plants within the clear sight triangle area shall not exceed one foot in height.

(4) 

Grading within the clear sight triangle shall not exceed a six-percent difference measured from the elevation at any point along the top of the curb. Existing grades in excess of 6% shall be regraded into compliance.

(5) 

Exceptions may be made by the Supervisors to allow the location of the following items in the clear sight triangle:

(a) 

One private signpost, provided that the post does not exceed one foot square or one foot in diameter and that the sign itself is above the minimum height limit.

(b) 

One shade tree, provided that, as the tree matures, the lower branches will be kept pruned to the minimum height limit.

(c) 

Existing shade trees, provided that lower branches are kept pruned to the minimum height limit and that the size, number and arrangement of trees does not impede adequate visibility. The Supervisors may require removal of one or more trees if necessary to provide adequate visibility.

H. 

Radii of pavement and right-of-way at intersections. Road intersections shall be rounded with tangential arcs at pavement edge (curbline) and right-of-way lines as listed below. Where two roads of different right-of-way widths intersect, the radii of curvature for the widest road shall apply. The pavement edge (or curbline) radius and right-of-way radius shall be concentric.

	Type of Road	Minimum Radius of Arc at Intersection of Pavement Edge or Curbline (feet)	Minimum Radius of Arc at Intersection of Right-of-Way Line (feet)
	Urban or rural semicontrolled access	40 (or more as may be required)	20
	Collector	30	20
	Feeder	30	20
	Residential	25	15
	Rural	25	15
	All other streets	25	15