Land Use and Built Environment

Bicycle Level of Service: Proposed Updated Pavement Quality Index

Huang, Jiayun
Fournier, Nicholas
Skabardonis, Alexander
Transportation Research Record: Journal of the Transportation Research Board
2021

The Highway Capacity Manual (HCM) employs a simple five-point system to assess the quality of bikeway pavement as part of the comprehensive bicycle level of service (LOS) evaluation. Unfortunately, the ambiguous and rudimentary nature of the existing HCM Pavement Quality Index (PQI) fails to offer an objective review of bikeways across different jurisdictions. In the following analysis, first is an assessment of the PQI and bicycle LOS in the HCM. To demonstrate the impact of the pavement quality rating and the importance of a more standardized evaluation method, a sensitivity analysis is...

Bay Bridge Toll Evaluation: Final Report

Deakin, Elizabeth
Frick, Karen Trapenberg
Cervero, Robert
Skabardonis, Alexander
Barnes, Ian
Kingsley, Karla
Rubin, James
Murakami, Jin
Amaro, Javier
Jensen, Erik
2012

On July 1, 2010, the Bay Area Toll Authority (BATA) raised the tolls on the seven state‐ owned bridges in the San Francisco Bay Area. For six of the bridges, a flat $5 toll was implemented for passenger vehicles with a 50% discount ($2.50 toll) for peak‐period 3+ person carpools, which had previously crossed the bridges free of charge. On the San Francisco‐ Oakland Bay Bridge, a more complex toll structure was put into place. The toll was increased to $6 during weekday peak periods (5‐10 a.m. and 3‐7 p.m.), and the off‐peak weekday toll was left unchanged at $4;The peak period 3+ person...

An Investigation of the Operation of the Metering System at the San Francisco Oakland Bay Bridge (SFOBB)

Amini, Zahra
Skabardonis, Alexander
Varaiya, Pravin
Transportation Research Board
2016

The westbound direction of the San Francisco-Oakland Bay Bridge (SFOBB) is one of the most heavily travelled tolled freeway facilities in the nation. A metering system is used to maintain the entering flow at capacity on the bridge and facilitate the merging of 20 traffic lanes at the toll plaza into five travel lanes on the bridge. This paper presents an assessment of the operating performance of the SFOBB and its metering system based on an analysis of the database of loop detector data, video recording, tollbooth counts, and metering logs. There are active bottlenecks that reduce the...

Field Operational Tests of Adaptive Transit Signal Priority Systems

Li, Meng
2010

An Adaptive Transit Signal Priority (ATSP) system is built upon and integrated with the existing Transit Automated Vehicle Location/Advanced communications system (AVL/ACS) to provide transit buses with needed priority by adaptively determining an optimum signal timing strategy based on status of both the concerned transit bus and the traffic conditions. PATH has conducted a series of studies on ATSP in collaboration with the California Department of Transportation (Caltrans) and San Mateo County Transit District (SamTrans) since 2000, involving the development and implementation of a...

Feasibility Study of Advanced Technology HOV Systems: Volume 2b: Emissions Impact of Roadway-Powered Electric Buses, Light-Duty Vehicles, and Automobiles

Miller, Mark A.
Dato, Victor
Chira-chavala, Ted
1992

This study investigates issues concerning the implementation and impacts of lateral guidance/control systems and the phased implementation of these systems in exclusive-access High Occupancy Vehicle (HOV) lanes. The study is divided into 5 volumes. The objectives of each volume are as follows: Vol. 1: identify strategies for early deployment of longitudinal control technologies on the highway, and to evaluate potential impacts of these strategies on traffic operation, highway capacity, and traffic accidents. Vol. 2A: assess the feasibility of early deployment of Roadway Powered Electric...

Are Public-Private Partnerships a Good Choice for U.S. Highways? A Review of the Literature

Iseki, Hiroyuki PhD
Taylor, Brian D.
Uchida, Kansai, MA
2009

In light of chronic funding shortfalls and waxing highway construction and maintenance demands, public private partnerships (PPPs) (often though not always in conjunction with road pricing) have been garnering increasing attention from government officials in the U.S. and abroad. Despite many strongly-held opinions on PPPs – both pro and con – systematic evaluations of their efficiency, effectiveness, equity, and feasibility are all too rare.This paper is the first part of a research project that aims to rectify this shortage of careful, evenhanded, and rigorous analyses of PPPs by drawing...

The Ridership Performance of the Built Environment for BRT Systems: Evidence from Latin America

Vergel-Tovar, C.
Rodriguez, D
2018
Despite the increasing popularity of BRT worldwide, there is a lack of empirical evidence regarding the built environment characteristics that determine BRT ridership. We examine associations between BRT station level demand and built environment attributes for 120 stations in seven Latin American cities. Using direct ridership models, we study whether underlying built environment factors identified using factor analysis and the package of these factors embodied in station “types” identified using cluster analysis were associated with higher ridership. Of the nine factors identified, those...

The Relationship Between Segment-Level Built Environment Attributes and Pedestrian Activity around Bogota’s BRT Stations

Rodriguez, DA
Brisson, EM
Estupiñan, N
2009

Few studies have examined the relationship between micro-scale features of the built environment and street segment usage. Micro-scale features of the built environment include the width of the sidewalk, the presence of amenities such as benches and trash bins, and the presence of crossing aids such as stoplights and crosswalks. This study employs segment-level primary data collected for 338 street segments in close proximity to one of 71 bus rapid transit stations in Bogotá, Colombia. We also use secondary data to control for area-level characteristics such as density, socio-...

The Development of an Accident Database to Structure Land Use Regulations in Airport Runway Approach Zones

Cooper, Douglas L.
Gillen, David
1993

This report presents and describes 400 aviation accidents which occurred within five miles of an airport. Section 2 contains a description of the development of the database and a discussion of the criteria used in selecting accidents for the database. Section 3 provides a description of the database itself as well as a set of statistics that provide a comprehensive overview of the accidents. A set of aircraft accident contours developed from the accident data points is presented in section 4. The purpose of these contours is to provide a picture of the distribution of accidents over space...

Calibration of VISSIM for a Congested Freeway

Gomes, Gabriel
May, Adolf
Horowitz, Roberto
2004

A procedure for constructing and calibrating a detailed model of a freeway using VISSIM is presented and applied to a 15-mile stretch of I-210 West in Pasadena, California. This test site provides several challenges for microscopic modeling: an HOV lane with an intermittent barrier, a heavy freeway connector, 20 metered onramps with and without HOV bypass lanes, and three interacting bottlenecks. Field data used as input to the model was compiled from two separate sources: loop-detectors on the onramps and mainline (PeMS), and a manual survey of onramps and offramps. Gaps in both sources...