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OCR for page 184
Lessons Learned from the Implementation
of New York Activity-Based Travel Model
Kuo-Ann Chiao, New York Metropolitan Transportation Council
Ali Mohseni, New York Metropolitan Transportation Council
Sangeeta Bhowmick, New York Metropolitan Transportation Council
T
he New York Best Practice Model (NYBPM) has · Air Quality Conformity Analysis;
been developed and implemented to meet the · Southern Brooklyn Transportation Investment
demand of regional planners seeking a more accu- Study;
rate way to identify transportation requirements and fore- · The Gowanus Expressway and Kosciuszko Bridge
cast demand on the transportation system. It has been used Study;
on many regional studies to simulate travel patterns includ- · Tappan Zee Bridge and the I-287 Corridor Study;
ing where people travel, their modes of travel (car, subway, · Bruckner Sheridan Expressway Study;
bus, ferry, walk and bike, or commuter rail), preferred · Bronx Arterial Needs Study; and
routes (highway versus local roads), and their trip times. · Goethals Bridge Modernization Draft Environ-
NYBPM is an activity-based model that attempts to mental Impact Study.
predict the detailed travel patterns of a diverse popula-
tion using numerous travel modes. It does this by intro- As one of the first metropolitan planning organiza-
ducing innovative approaches to the traditional travel tions (MPOs) in the country to develop and implement a
demand models including the concept of journey or tour new generation of travel demand forecasting models,
as the unit of travel; microsimulation, which is used to this paper shares New York Metropolitation Trans-
simulate the travel pattern of each person in the region portation Council's (NYMTC's) experience throughout
and among all other modes of travel; and nonmotorized different stages of development and implementation of
modes. NYBPM. Immediately after release of the models in
NYBPM covers 28 counties and is divided into 3,586 1992, NYMTC's modeling staff was faced with a series
transportation analysis zones. The model analyzes travel of problems, which are discussed in the following
patterns by four time periods and eight trip purposes on sections.
six highway and four transit modes. The highways of the
region are represented in a geographic information sys-
tem (GIS) with more than 53,000 segments. All available IDENTIFIED NYBPM ISSUES
transit modes of the New York metropolitan region rang-
ing from commuter rail to ferries are also coded in GIS. Timeliness and Completeness of Data
NYBPM was previewed before a national audience in
January 2001 during the TRB Annual Meeting in Wash- The development of the regional NYBPM, and the data
ington, D.C., and immediately was in wide implementa- required for its development, largely occurred in the mid-
tion throughout the region on various projects in and late 1990s. Networks were developed to represent a
different sizes including: 1996 base-year condition, 6 years after the most recent
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