Personal Mobility

Using a lateral driver assist system for snowplow operators as an example, the impact on driver performance of subtle changes in control laws was explored. The display for the driver assist system provided integrated information on current lateral position, road orientation and curvature, and a prediction of future location. Changes in driver performance were seen by modifying the gains for terms within the prediction control law. Most notably, removal of the prediction feature or road orientation led to substantially decreased performance. Gain increases above one in the road orientation term led to improved speed, lateral positioning, and steering wheel standard deviation due to the stability improvement of the driver assist system.

University of California, Berkeley - California Partners for Advanced Transit and Highways (PATH)

Presented at the 10th ITS Annual Conference and Exposition, May 1-4, 2000 Boston, MA

This thesis introduce a methodology for calculating OD flow of bus stops
based on the data of intelligent card of public transit. First, the date for deducing OD
flow of bus stops and the process of data preparing are expatiated, then analyzing
the characteristics of intelligent card of Beijing public transit, with the data and
characteristics all the possible interchange route-pairs, interchange stops and
interchange directions can be estimated. Identifying number of transfers for each
route-pairs, based on the data of intelligent card. Finally, the methodology of
calculating the OD flow of bus stops of the whole Beijing is introduced.

Beijing Transport Research Center

MVA Transportation Consultant Corporation, LTD

Presented at the 15th World Congress on Intelligent Transport Systems, November 16-20, 2008, New York, New York

The major goal of this paper is to investigate the use of GPS technology in public transit systems with a particular focus on services-on-demand types of transit systems (dial-a-ride, jitney, door-to-door services, taxi, etc.). The paper argues that such services have a greater potential than traditional bus or rail systems for luring SOV drivers out of their automobiles and into public transit, given the opportunities afforded by GPS and advanced communications technology for more efficient scheduling and control for these services. The paper reviews advantages and disadvantages of various forms of public transit and then discusses ways in which GPS technology has advanced automatic vehicle locator (AVL) systems that have already contributed to improved operations of fixed-route bus systems. The paper then reviews available literature on costs of this technology and its impact on overall operating costs.

University of Minnesota

Presented at the ITS America Annual Conference and Exposition, May 19-22, 2003 Minneapolis, Minnesota

Increasing awareness levels of the average motorist to the ever changing traffic
conditions encountered on an interstate highway system prepares them for their trip, thus
improving the mobility of people and goods regionally and nationally. Knowledge of
traffic conditions and travel times in advance of travel provides the motorist with
valuable information and allows them an option that is unavailable to the uninformed
motorist. Alert motorists can react with confidence to known situations or decide to take
an alternate route. The net result, informed motorists react better to situations that are
known in advance and in turn, can reduce or eliminate potential crashes or gridlock.

National Engineering Technology Corp.

Illinois State Toll Highway Authority

Illinois Department of Transportation

Presented at the ITS America Annual Conference and Exposition, April 26 - 28, 2004 San Antonio, Texas

Real-time transit passenger information systems are intended to improve the level of service provided by transit agencies. Such systems provide real-time information on when buses on specified routes are expected to arrive to a bus stop. Although such information is assumed to be of benefit, methods for evaluating these benefits under various conditions are limited. This paper expands upon the functionality and application of an evaluation methodology recently developed by the authors. The methodology focuses on the potential benefits of bus arrival information systems to passengers waiting at bus stops under various supply and demand characteristics. Transit bus operations and passenger arrivals are modeled as a stochastic system where the operator uses real-time bus location data to provide to waiting passengers bus arrival time information that maximizes passengers’ utilities. Simulation results reveal the nature of the dependence of the value of such information systems on the type of real-time data available to the operator, bus operations characteristics, and demand patterns. These results indicate that while the first two influence the value of information to passengers, demand patterns do not have a significant impact.

Rabi G. Mishalani, Mark R. McCord, and Sungjoon Lee

Presented at the 10th ITS Annual Conference and Exposition, May 1-4, 2000 Boston, MA