Definitions.
CAPACITY ANALYSIS
Intersection approach capacity is the maximum rate of vehicular flow that can pass through an intersection under prevailing roadway, traffic and signalization conditions. The analysis compares the actual or projected traffic volume to the intersection capacity and results in a volume/capacity (V/C) ratio.
LEVEL-OF-SERVICE
Level of service (LOS), as described in the 2000 Edition of the “Highway Capacity Manual,” (Special Report 209, Transportation Research Board) or as amended, is a qualitative measure of the operational conditions within a traffic stream and their perceptions by motorists. Levels of service are defined in terms of delay for signalized intersections and reserve capacity for unsignalized intersections. Six levels of service (A through F) are defined for each type of facility with LOS “A” representing least congested operating conditions and LOS “F” representing a breakdown in operating conditions.
MAJOR INTERSECTION
The intersection of any arterial or collector street with any other arterial or collector street as defined by the Highway Classification Map of the Quakertown Area Zoning Ordinance (Appendix 27-A) or the equivalent document of adjacent municipalities where appropriate. The transportation engineer shall seek guidance from the Zoning Officer prior to the initiation of the traffic impact study to insure agreement on the location of major intersections.
OFF-SITE TRANSPORTATION IMPROVEMENTS
Other transportation related improvements which are generally not contiguous with the property being developed and not required as an on-site improvement but found to be necessary, partly or wholly as a result of the proposed use.
ON-SITE TRANSPORTATION IMPROVEMENTS
All improvements on or adjacent to the development site in the public right-of-way required to be constructed by the developer pursuant to any ordinance, resolution or requirement of the municipality and/or directly related to the transportation needs of the proposed use.
PUBLIC TRANSPORTATION
Transportation services for the general public provided by a common carrier of passengers generally but not necessarily on a regular route basis, by the Southeastern Pennsylvania Transportation Authority or a private operator offering service to the public.
STUDY AREA
The study area shall be defined by two concentric circles at each access point. The first circle shall have a radius of ½ mile from each access point and shall include all intersections along all roadways on which the tract has frontage and all major intersections on all other roadways. The second circle shall have a radius of one mile from each access point and include all major intersections on all roadways on which the tract has frontage. In the case that no major intersections are encountered on frontage roadways within either ½-mile or one-mile radius areas, the study area shall be extended along frontage roadways to at least the first major intersection in each direction. All intersections identified in the study area should be examined. Proposals that will generate more than 2,500 new average daily trips shall expand the first concentric circle to a one-mile radius and the second circle to a two-mile radius. The study shall consider all intersections meeting this criteria, even if the intersections are located outside of the municipality. The transportation engineer shall seek guidance from the Zoning Officer prior to the initiation of the traffic impact study to insure agreement on the study area boundaries.
TRIP GENERATION RATES
The total count of trips to and from a study site per unit of land use, as measured by parameters like dwelling units or acres. The “ITE Trip Generation Report, Eighth Edition” or as amended by the Institute of Transportation Engineers shall be referenced to determine specific rates.
WARRANTS FOR TRAFFIC SIGNAL INSTALLATION
A series of tests which detail the minimum traffic or pedestrian volumes or other criteria necessary for the installation of a traffic signal. These warrants are contained in the “Manual on Uniform Traffic Control Devices for Streets and Highways,” U.S. Department of Transportation, Federal Highway Administration, 1978, as amended.