Capacity Analysis of Pedestrian and Bicycle Facilities

Capacity Analysis of Pedestrian and Bicycle Facilities

Author: Nagui Rouphail

Publisher:

Published: 1998

Total Pages:

ISBN-13:

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The objective of this project was to develop revised operational analysis procedures for transportation facilities with pedestrian and bicyclist users. This document contains both new and revised procedures for analyzing various types of exclusive and mixed–use bicycle facilities. These procedures are recommended to determine the level of service for bicycle facilities on the basis of previous domestic and international bicycle operations research conducted to date. This document only addresses procedures for streets, roads, and intersections with designated bicycle facilities. In addition to this report, there were two additional reports produced as part of this effort on Capacity Analysis of Pedestrian and Bicycle Facilities.


Traffic Operations at Intersections

Traffic Operations at Intersections

Author: Rod Troutbeck

Publisher:

Published: 2020-06-03

Total Pages: 250

ISBN-13:

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Traffic Operations at Intersections: Learning and Applying the Models and Methods of the Highway Capacity Manual Chapters on all-way stop-controlled intersections, two-way stop-controlled intersections, and signalized intersections Designed for practicing transportation engineers and university seniors and graduate students 11 simplified scenarios to open-up your understanding of the HCM 43 example calculations that are fully worked out and explained in detail 7 computational engines that allow you to see inside and then apply the models 138 figures to clearly illustrate concepts Additional problems online The models of the Highway Capacity Manual (HCM) are often the engineer's choice to analyze intersection performance. These models are complex, and nearly all transportation engineers use software implementations of these models to conduct their analyses. Software applications are powerful tools that help engineers solve problems. But these applications also serve as barriers to the understanding of the complex models embedded in the software. Our major objective in writing this book is to transform the "black box" of the HCM intersection models, and their software implementations, into a "clear box" that allows the engineer to better understand how these models work. We do this through the idea of the "simplified scenario." The eleven scenarios that we present are based on conditions greatly simplified from what you would normally see in the field. By focusing on one concept at a time, in the context of these simplified conditions, you will better understand the fundamentals of the HCM intersection models. You will then be able to apply these models to more complex intersections with skill, confidence, and insight.


Review and Evaluation of Methods for Analyzing Capacity at Signalized Intersections

Review and Evaluation of Methods for Analyzing Capacity at Signalized Intersections

Author: E. D. Arnold

Publisher:

Published: 1996

Total Pages: 40

ISBN-13:

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VDOT's current policy is to use and accept from others the 1994 Highway Capacity Manual (HCM) as the basis for capacity analysis on Virginia's streets and highways. VDOT uses the latest version of the Highway Capacity Software (HCS). Software programs replicating the 1994 HCM may be used by others submitting work to VDOT for review; however, all input data and assumptions must be provided, and VDOT may use the HCS to check the submitted analysis. The analysis may be rejected if different results are obtained. To recommend appropriate revisions to this policy, this study evaluated computer software other than HCS that can be used in the analysis of signalized intersections, determining which programs provide acceptable results. The study then evaluated the results from simulation models to determine when and how to use this output in the analysis of signalized intersections. The study recommended that, in addition to HCS, VDOT use and accept from others SIGNAL94 and HCM/Cinema, or TRAF/NETSIM for capacity analysis at isolated intersections. CINCH, however, should not be used or accepted. For congested, oversaturated intersections, TRAF/NETSIM should be the preferred analysis type. Estimates of queue length at isolated signalized intersections should be derived from SIGNAL94, HCM/Cinema, or TRAF/NETSIM. For non-isolated intersections where queuing and spillback are a potential problem, simulation analysis with TRAF/NETSIM should be used instead of capacity analysis to determine the operational characteristics of the corridor.