Special reports on trip and vehicle attributes: based on data from 1990 Nationwide Personal Transportation Survey (NPTS).

Federal Highway Administration, Washington, D.C.

A modified Density-Based Scanning Algorithm with Noise for spatial travel pattern analysis from Smart Card AFC data

Smart Card Automated Fare Collection (AFC) data has been extensively exploited to understand passenger behavior, passenger segment, trip purpose and improve transit planning through spatial travel pattern analysis. The literature has been evolving from simple to more sophisticated methods such as from aggregated to individual travel pattern analysis, and from stop-to-stop to flexible stop aggregation. However, the issue of high computing complexity has limited these methods in practical applications. This paper proposes a new algorithm named Weighted Stop Density Based Scanning Algorithm with Noise (WS-DBSCAN) based on the classical Density Based Scanning Algorithm with Noise (DBSCAN) algorithm to detect and update the daily changes in travel pattern. WS-DBSCAN converts the classical quadratic computation complexity DBSCAN to a problem of sub-quadratic complexity. The numerical experiment using the real AFC data in South East Queensland, Australia shows that the algorithm costs only 0.45% in computation time compared to the classical DBSCAN, but provides the same clustering results.

Searching for solutions: a policy discussion series. Nationwide Personal Transportation Survey Symposium. Proceedings.

Federal Highway Administration, Office of Highway Policy Information, Washington, D.C.

Analysis of the future effects of the fuel shortage and increased small car usage upon traffic deaths and injuries. Final report. Executive summary.

Transportation Department, Office of Systems Engineering, Washington, D.C.

Short-range public transportation improvements. Final report.

Urban Mass Transportation Administration, Washington, D.C.

Vehicle occupancy: report 6, 1977 - NPTS. Final report.

Federal Highway Administration, Highway Statistics Division, Washington, D.C.

Demographic special reports: based on data from 1990 Nationwide Personal Transportation Survey (NPTS).

Federal Highway Administration, Washington, D.C.

1990 Nationwide Personal Transportation Survey: user's guide to the public use tapes.

Federal Highway Administration, Washington, D.C.

Travel mode special reports: based on data from 1990 Nationwide Personal Transportation Survey (NPTS).

Federal Highway Administration, Washington, D.C.

TRIPCAL5 documentation manual, revised edition.

Texas Department of Transportation, Austin

National travel surveys. FHWA study tour.

Mode of access: Internet.

Nationwide Personal Transportation Survey: 1990 NPTS databook. Volume II.

Federal Highway Administration, Washington, D.C.

Problems of the carless. Final report.

Transportation Department, Office of University Research, Washington, D.C.

Mobility of people and goods in the urban environment: mobility of the handicapped and elderly. Second draft final report (second year).

Transportation Department, Office of University Research, Washington, D.C.

NPTS urban travel patterns. 1990 Nationwide Personal Transportation Survey (NPTS).

Federal Highway Administration, Washington, D.C.