Development of Analytical Tools for Evaluating Operations of Light-Rail At-Grade Within an Urban Signal System
Provides a comprehensive, state-of-the-art review of the operation and control strategies of light rail transit systems (LRTS). Intended to serve as a basis for further research in the goal of developing an analytical tool for evaluating the operations of light rail at-grade within an urban signal system. Identifies the various at-grade crossing types that can exist for a LRTS, the operating characteristics of light rail vehicles, and the use of control devices at at-grade crossings. Summarizes both the priority strategies used by transit agencies and the methods of evaluation used to assess the impacts of LRTS.
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adjacent analytical tool arterial at-grade crossings Austin Barton-Aschman Board Special Report Calgary Capital Metro Compendium of Technical conﬁgurations coordination crossbucks crossing types cycle length Dallas deﬁned delay to automobiles developed downtown existing Fambro Flashing Light ﬂexibility ﬂow gates Grade Crossings grade separation green headways impacts of LRT input isolated crossing level of service Light Rail Transit Light Signals located LRT operation LRT system LRT tracks LRV phase LRV priority measure of effectiveness median Median Operation Melbourne methodology mixed trafﬁc National Research Council NETSIM optimization planning pre-emption priority treatments programs queue length Research Board Special ridership roadway SCATS signal preemption signalized intersections simulation Special Report 221 speed stop System Successes technical committee Texas Transportation Institute Toronto Transit Commission traffic trafﬁc control device trafﬁc signal controllers train Transportation Research Board Transportation Research Record TRANSYT-7F TRB Special Report trolley TxDOT urban signal system Washington
Page iv - The contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the Illinois Department of Transportation or the Federal Highway Administration. This report does not constitute a standard, specification, or regulation.
Page xi - This document provides a comprehensive, state-of-the-art review of the operation and control strategies of light rail transit systems. It is intended to serve as a basis for further research in the goals of developing an analytical tool for evaluating the operations of light rail at-grade within an urban signal system.
Page 37 - ... are presented. These guidelines are designed to minimize vehicles crossing during the warning period and promote driver credibility for the active control devices. 3. Richards, SH, KW, Heathington, and DB Fambro, "Evaluation of Constant Warning Time Using Train Predictors at a Grade Crossing with Flashing Light Signals," Transportation Research Record 1254, Transportation Research Board, Washington, DC (1990) pp. 60-71. AUTHOR Abstract: This paper documents the results of field studies conducted...
Page 35 - ... without train predictors where train warning times are long and variable; (4) crossings where there are school buses, trucks transporting hazardous materials, or high-speed passenger trains; and (5) crossings with recurring accidents or gate violations. 9. Heathington, KW, SH Richards, and DB Fambro, "Guidelines for the Use of Selected Active Traffic Control Devices at Railroad-Highway Grade Crossings," Transportation Research Record 1254, Transportation Research Board, Washington, DC (1990)...
Page 37 - Richards, SH and KW Heathington, "Assessment of Warning Time Needs at Railroad-Highway Grade Crossings with Active Traffic Control," Transportation Research Record 1254, Transportation Research Board, Washington.
Page 37 - School of the University of Texas at Arlington in partial fulfillment of the requirements for the degree of Master of Arts in Linguistics in August 1978.
Page 31 - ... designed primarily to serve as a vehicle for testing relatively complex network control strategies under conditions of heavy traffic flow. It is particularly appropriate to the analysis of dynamically-controlled traffic signal systems based upon realtime surveillance of network traffic movements. It may also be used, however, to address a variety of other simpler problems, including the effectiveness of conventional traffic engineering measures (eg, parking and turn controls, channelization,...
Page 24 - Time-based coordination is a relatively inexpensive means of allowing traffic signals on the LRT corridor to be synchronized with either adjacent signals on the corridor or signals on the cross street, or both, depending on the cycle length requirements at different times of the day and days of the week. The controller...
Page 36 - BUILDING LIGHT RAIL TRANSIT IN EXISTING RAIL CORRIDORS: PANACEA OR NIGHTMARE? THE LOS ANGELES EXPERIENCE...