00771094

Component

https://doi.org/10.3141/1666-06

http://scholar.google.com...feld&publication_year=1999

New Jersey Transit (NJT) is investigating acquisition of an automated vehicle locator (AVL) system. The purpose of the AVL system is to monitor the location of buses. Knowing the location of a bus allows the operator to manage the bus fleet more efficiently and to provide customers with up-to-the-minute information on bus arrivals and departures. To monitor the location of the buses, their positional information (as determined by the AVL) is displayed on a digital map such as a geographic information system. To ensure accurate information, the location (coordinates) of the bus must be consistent (or within a small tolerance) with those of the digital map. If this is not the case, the system can yield incorrect information. This problem might become especially critical in an urban area where the system would be most valuable. The methodology that was developed for testing and evaluating the accuracies of AVL systems and available digital maps is described. The AVL system analyzed is the continuous positioning system by Andrew Corporation. Digital mapping products evaluated were TIGER, Navtech, and Digital Orthophotos. These data sets were evaluated with an accurate network of control points measured by a global positioning system. Some recommendations on the appropriateness of the tested AVL system and NJT's digital mapping data are made.

This paper appears in Transportation Research Record No. 1666, Transit Bus; Rural, Intercity, and Paratransit; New Technology, Capacity, and Quality of Service.

English

p. 44-51

1999

Transportation Research Record

0309070619

Figures (5) ; References (2) ; Tables (4)

Accuracy; Arrivals and departures; Automatic vehicle location; Bus transit operations; Digital maps; Fleet management; Geographic information systems; Location

New Jersey Transit

Aviation; Highways; Operations and Traffic Management; Planning and Forecasting; Public Transportation

TRIS, TRB, ATRI

Oct 5 1999 12:00AM

• ACCESS TO INTERCITY PUBLIC TRANSPORTATION SERVICES FROM SMALL COMMUNITIES: GEOSPATIAL ANALYSIS
• ASSESSING MEANS OF TRANSIT INFORMATION DELIVERY FOR ADVANCED PUBLIC TRANSPORTATION SYSTEMS
• AUTOMATED BUS DISPATCHING, OPERATIONS CONTROL, AND SERVICE RELIABILITY: BASELINE ANALYSIS
• BUS STOP DESIGN AND AUTOMATED GUIDANCE FOR LOW-FLOOR BUSES: EVALUATION OF PROTOTYPES WITH INVESTIGATION OF HUMAN FACTORS
• CARSHARING AND PARTNERSHIP MANAGEMENT: AN INTERNATIONAL PERSPECTIVE
• COMPONENTS OF TRAVEL TIME ON THE GLENDALE BEELINE BUS NETWORK
• ECONOMIC IMPACT OF RURAL TRANSIT SERVICES
• EVALUATION RESULTS OF SAN FRANCISCO BAY AREA STATION-CAR DEMONSTRATION
• EXPERIMENTAL STUDY OF REAL-TIME BUS ARRIVAL TIME PREDICTION WITH GPS DATA
• IMPLEMENTATION OF A TIMED TRANSFER NETWORK AT NORFOLK, VIRGINIA
• IMPROVING PARATRANSIT SCHEDULING BY ACCOUNTING FOR DYNAMIC AND STOCHASTIC VARIATIONS IN TRAVEL TIME
• MODEL TO MINIMIZE NONREVENUE COSTS IN BUS TRANSIT OPERATIONS
• PRAXITELE: PRELIMINARY RESULTS FROM THE SAINT-QUENTIN STATION-CAR EXPERIMENT
• REGIONAL COMMUTER BUSES AND THEIR POTENTIAL APPLICABILITY IN CONNECTICUT
• WHO NOTICED, WHO CARES? PASSENGER REACTIONS TO TRANSIT SAFETY MEASURES