Travel Behavior

San Francisco Bay Area US-101 Existing Conditions, ITS Assets, and Active Transportation and Demand Management Assessment

McKeever, Benjamin
Skabardonis, Alexander
Mauch, Michael
Campbell, Robert
Alexiadis, Vassili
Wornum, Christopher
2018

The 58.5-mile long Highway 101 corridor from the Bay Bridge to the SR 85/US-101 interchange in South San Jose accommodates just over 2.6 million trips on an average weekday. Travel delays on the US-101 corridor over the 2012-2016 five-year period increased by more than 91% (an average delay increase of over 18% per year). Given that California’s economy recently grew to become the sixth largest in the world, this waste of time stuck in traffic ranks among the most consequential economic inefficiencies in the world; workers in this region produce about 15 percent of California’s annual...

ITS Information And Services To Enhance The Mobility Of Disabled Travelers

Chen, Wan-hui
Uwaine, Rochelle
Klaver, Kelley
Kurani, Ken
Jovanis, Paul P.
1998

This study examined the potential of advanced information systems to increase the mobility of disabled travelers using public transportation. A stated preference survey inquired as to whether subjects would make more trips by transit, paratransit, and/or real-time paratransit if kiosk, on-board, in-home, and/or personal information systems were available. The results show that these systems do have the potential to increase the use of public transportation by disabled travelers, as they allow for more trip flexibility that what is currently available. Regression and log-linear models show...

Objective Correlates and Determinants of Bicycle Commuting Propensity in an Urban Environment

Cole-Hunter, T
Donaire-Gonzalez, D
Curto, A
Ambros, A
Valentín, A
Garcia-Aymerich, J
Martinez, D
Braun, L
Mendez, M
Jerrett, M
Rodriguez, D
Nazelle, A De
Nieuwenhuijsen, MJ
2015
Bicycle use for commuting is being encouraged not only to address physical inactivity, but also vehicular congestion, air pollution and climate change. The current study aimed to ascertain the urban environmental correlates and determinants of bicycle use for commuting (bicycle commuting) among the working or studying population in Barcelona, Spain. Adults (n = 769; 52% females) recruited whilst commuting within Barcelona (Spain) responded to a comprehensive telephone survey concerning their travel behaviour. Based upon...

Experimental Vehicle Platform for Pedestrian Detection

Chan, Ching-Yao
Bu, Fanping
Shladover, Steven
2006

This report documents the work conducted for PATH Task Order 5200 – the evaluation of sensor technologies for pedestrian detection. A survey of recent and available sensor products were selected and evaluated to assess their applicability for vehicle-based solutions. The performance characteristics and limitations of various products and technological approaches were investigated. Subsequently, demonstrative experimental vehicle platforms and testing facilities were developed to illustrate the concept of vehicle infrastructure integration.

Platoon Collision Dynamics And Emergency Maneuvering IV: Intra-platoon Collision Behavior And A New Control Approach For Platoon Operation During Vehicle Exit/entry - Final Report

Tongue, Benson H.
Yang, Yean-tzong
1994

This report examines platoon behavior during non-nominal operations, most especially due to emergency braking. Three main topics are discussed: multiple-collision wave propagation effects for homogeneous platoons with and without lead vehicle information, intra-platoon collision behavior of non-homogeneous platoons during emergency operations, and a new control approach for platoon operations during vehicle exit/entry.

Observations On European Advanced Traveler Information And Traffic Management Systems

Yim, Youngbin
Ygnace, Jean-luc
1993

This report documents the current state of Intelligent Vehicle Highway Systems (IVHS) technologies in Europe with special attention to advanced traveler information systems (ATIS) and advanced traffic management systems (ATMS). The views presented in the report are largely derived from information gathered at two conferences and from personal interviews with researchers and government authorities engaged in the European IVHS research effort. The report is organized into three sections: a brief description of the DRIVE I program, the current state of the DRIVE II program, and the status of...

Development of an Adaptive Corridor Traffic Control Model

Recker, Will
2008

This report documents work performed on PATH TO 5323. Due to an administrative mandate, the work performed and reported herein constitutes only the early stages of the multi-year project that was approved under PATH TO 5323, and subsequently divided into two distinct awards—TO 5323 and TO 6323. Moreover, a series of events during the early stages of the project substantially redirected the original effort. These factors led to a major redirection from the original project. The majority of the work performed under the revised TO 5323 was then to develop a methodology consistent with the new...

Onboard Monitoring and Reporting for Commercial Vehicle Safety (OBMS) Phase II: Field Operational Test

Misener, Jim
Nowakowski, Christopher
O'Connell, Jessica
Murray, John
2008

Each year in the United States over 450,000 large trucks are involved in crashes, resulting in about 5000 fatalities and 120,000 injuries. Significantly, truck driver error is a major causal factor to truck-involved crashes. This points toward onboard monitoring as a promising means to encourage good driving behavior, it would recognizing and provide necessary feedback to correct self-induced hazardous driving situations. This is the basis for our past prototype development effort, which has produced under Task Orders 5509 and 6609 a suite of hardware on a Freightliner Century Class.This...

The Added Benefit of Bicycle Commuting on the Regular Amount of Physical Activity Performed

Donaire-Gonzalez, D
Nazelle, A De
Cole-Hunter, T
Curto, A
Rodriguez, D
Mendez, M
Garcia-Aymerich, J
Basagana, X
Ambros, A
Jerrett, M
Nieuwenhuijsen, MJ
2015
Physical inactivity is a leading cause of death and disability globally. Active transportation such as bicycling may increase physical activity levels. It is currently...

Longitudinal Analysis of Adolescent Girls' Activity Patterns: Understanding the Influence of the Transition to Licensure

McDonald, NC
Merlin, L
Hu, H
Shih, J
Cohen, D
Evenson, K
McKenzie, T
Rodriguez, D
2017

The proportion of teens and young adults with driver's licenses has declined sharply in many industrialized countries including the United States. Explanations for this decline have ranged from the introduction of graduated driver licensing programs to the increase in online social interaction. We used a longitudinal cohort study of teenage girls in San Diego and Minneapolis to evaluate factors associated with licensure and whether teens' travel patterns become more independent as they aged. We found that licensure depended not only on age, but on race and ethnicity as well as...