Travel Behavior

Inter Vehicle Spacing: User's Manual (2 Diskettes Included)

Ioannou, P.
Kanaris, A.
Grammagnat, A.
1997

This documentation and software provides a tool which enable a user to perform the following tasks regarding vehicle spacing:; calculate the minimum initial spacing between two vehicles, calculate the possibility and severity of collision between two vehicles, visualize the motion of the two vehicles in the longitudinal direction during braking maneuvers, and calculate the highway capacity given factors for velocity, spacing, and size of vehicles and platoons.

TravInfo Field Operational Test Institutional Evaluation Final Results

Yim, Youngbin
Deakin, Elizabeth
2000

This paper documents the final analysis of a three part series of institutional evaluations of the TravInfo Field Operational Test from its inception in 1992 through its completion in 1998. The Field Operational Test was performed over a two-year period from September 1996 to September 1998. Funding for the TravInfo evaluation was from the Federal Highway Administration with a matching grant from the California Department of Transportation (Caltrans). The institutional evaluation examined TravInfo's unique concept of open-architecture and its collaborative public-private partnership to...

Implementing A Dynamic O-D Estimation Algorithm within the Microscopic Traffic Simulator Paramics

Garcia, Reinaldo C.
2002

California has long recognized the potential for applying electronic and other transportation systems technologies to address the significant mobility and economic challenges in the state,and the rest of the nation.Through an aggressive Advanced Transportation Systems Program,Intelligent Transportation Systems (ITS)are being researched,built,and tested for deployment.These ITS will address today s transportation needs and those of the twenty-first century.An important element of this program is the California Advanced Transportation Management Systems Testbed (California ATMS Testbed)...

The Spatial Evolution of Traffic Under the Two Wave Speed Assumption: A Shortcut Procedure and Some Observations

Daganzo, Carlos F.
1993

This paper describes the behavior of traffic in a homogeneous highway according to the hydrodynamic theory, in the special casewhere the flow-density relationship is triangular; i.e. when only two wave velocities exist. It presents an exact formula thatpredicts the vehicle that would be found at position x at time t, given the locations of all the vehicles at time zero. The formula, which does not require identification of the vehicle positions at intermediate times, automatically accounts for the creation and dissipation of any shocks. It can be used to calculate system performance...

Event-based ATIS: Practical Implementation and Evaluation of Optimized Strategies (Part I)

Jayakrishnan, R.
Tsai, Wei K.
Oh, Jun-Seok
Adler, Jeffrey
1999

This project will further adapt and enhance the previous research of relevance to event-based Advanced Traveler Information Systems (ATIS) and implement the algorithms for traffic management in Anaheim. The implementation involves the Caltrans-UCI ATMS research testbed framework at the UCI Institute of Transportation Studies, as well as the physical hardware available for communication to the city of Anaheim. The analytical algorithms proposed for use here include those for static and dynamic traffic assignment. and the modeling schemes used are the result of previous PATH and Testbed...

Travel Effects of a Suburban Commuter Carsharing Service: CarLink Case Study

Shaheen, Susan A.
Rodier, Caroline J.
2005

Since 1998, carsharing programs (or short-term auto rentals) in the U.S. have experienced exponential membership growth. As of July 2003, 15 carsharing organizations collectively claimed 25,727 members and 784 vehicles. Given this growing demand, decision makers and transit operators are increasingly interested in understanding the potential for carsharing services to increase transit use, reduce auto ownership, and lower vehicle miles traveled. However, to date, there is only limited evidence of potential program effects in the U.S. and Europe. This paper presents the travel effects of...

Smart Parking Linked to Transit: Lessons Learned from Field Test in San Francisco Bay Area of California

Shaheen, Susan A.
Kemmerer, Charlene
2008

Rising demand for parking at suburban transit stations, such as the Bay Area Rapid Transit (BART) District in California, necessitates strategies to manage traveler demand. To better manage parking supply, researchers implemented a smart parking field test at the Rockridge BART station from 2004 to 2006 to evaluate the effects of smart parking technologies (changeable message signs (CMSs), Internet reservations and billing, mobile phone and personal digital assistant communications, and a wireless parking lot counting system) on transit ridership and response to service pricing....

Untapped Opportunities: Assessment of Organizational Strategies to Improve Border Coordination in California at the U.S. and Mexico Border; Final Report for California Integrated Border Approach Strategy, Phase 2

Trapenberg Frick, Karen
Deakin, Elizabeth
Whittington, Jan
Anderson, Karl
Leshner, Eleanor
Garrett, Mark
2017

In 2013, The California Department of Transportation-District 11 (Caltrans) launched the California Integrated Border Approach Strategy (CA-IBAS) in response to a need for a better-integrated border transportation system that reduces impacts on border communities. Work was conducted in two phases to identify ways to better address regional mobility needs and the traveler experience in California’s communities along the California-Mexico border. During Phase 1, led by METRANS, the team conducted a preliminary assessment of key institutional and policy issues at CaliforniaMexico land POEs,...

Untapped Opportunities: Assessment of Organizational Strategies to Improve Border Coordination in California at the U.S. and Mexico Border; Final Report for California Integrated Border Approach Strategy, Phase 2

Trapenberg Frick, Karen
Deakin, Elizabeth
Whittington, Jan
Anderson, Karl
Leshner, Eleanor
Garrett, Mark
2017

In 2013, The California Department of Transportation-District 11 (Caltrans) launched the California Integrated Border Approach Strategy (CA-IBAS) in response to a need for a better-integrated border transportation system that reduces impacts on border communities. Work was conducted in two phases to identify ways to better address regional mobility needs and the traveler experience in California’s communities along the California-Mexico border. During Phase 1, led by METRANS, the team conducted a preliminary assessment of key institutional and policy issues at CaliforniaMexico land POEs,...

Heightening Walking above its Pedestrian Status: Walking and Travel Behavior in California

Blumenberg, Evelyn
2016

People walk a lot—to walk pets, to exercise and recreate, and to access public transit and local shops. Walk trips begin and end almost every journey, even trips made by automobile. Data from the current California Household Travel Survey (CHTS) show that walking occurs more than trips by both transit and bicycle, making it the second most common travel mode in California. Yet outside of select case studies in specific metropolitan areas, we know very little about walking behavior in California. An improved understanding of the determinants of walking will aid efforts to reduce driving and...