Specifications include, but are not limited to: A. APC Hardware and Performance Requirements The APC system will leverage existing systems when possible rather than implementing systems that result in duplicate functionality, unless redundant systems improve system reliability. The APC system will accurately count passengers as they board and alight recording the data as a function of individual stops, routes and trips; Overall system performance will enable the exact determination of alighting and boarding passengers at each stop with an accuracy greater than 95%; The APC system will be designed and tested to produce highly accurate passenger counts, to demonstrate an ability to discriminate valid passengers from non-passenger objects, and to detect double-backs and re-crossings; The APC system will not interfere electronically with the operation of the transit vehicle or its onboard electronic equipment such as security equipment, engine controls, transmission or other electronic equipment;