@article{ref1,
title="Light rail transit grade separation guidelines",
journal="ITE journal",
year="1993",
author="",
volume="63",
number="1",
pages="38-40",
abstract="This report discusses work that has been done, and draws conclusions that can be used as guidelines for light rail planning and design. Four general situations are identified and discussed: light rail can usually be operated at-grade with full preemption; full preemption might or might not operate satisfactorily and where site-specific conditions must be taken into account; light rail might be operable only with conditional preemption, signal progression, LRT-only actuated phases, or other solutions involving LRT delays; and LRT at-grade operation is likely to be infeasible under any conditions. It is shown that the decision on whether to grade separate is one that must be made on a site-specific, crossing-by-crossing basis, and general threshold ADT (average daily cross-street traffic) values should be used only as initial guidelines for determining surface operational feasibility.<p />",
language="",
issn="0162-8178",
doi="",
url="http://dx.doi.org/"
}