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Title:

Constructing Full-Day Feasible Space-Time Polyhedron Using Activity-Based Space-Time Prisms

Accession Number:

01556835

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

In this paper, space-time prism from time geography is applied to the decision making scheme of the Household Activity Pattern Problem (HAPP), a full-day activity-based travel demand model. An activity-based space-time prism with no prior decisions of paths (Origin-Destination) is defined as supposed to the classical path-based space-time prism with known Origin-Destination. Then the new concept of full-day feasible space-time polyhedron is defined as an intersection of a set of activity-based space-time prisms. This approach is a generalization of the classical space-time prism since the full-day feasible polyhedron often decomposes into the classical space-time prism by peg activities, activities that delimit space and time by participating in those activities. The concept of activity-based space-time prism and the full-day feasible space-time polyhedron also expands the horizon of classical space-time prism in that it can be used to define accessibility for travelers with no peg activities. A computational algorithm is developed for the construction of activity-based space-time prism and feasible polyhedron for network-based travel environment. The algorithm generates a set of time windows for each activity for each node. For a full-day activity agenda, intersections of these windows are derived. Then these node-based time windows are converted to link-based time windows of accessibility. This algorithm works for a traveler that contains peg(s) of activities as well as a traveler with no peg activity for the travel day.

Supplemental Notes:

This paper was sponsored by TRB committee ADB40 Transportation Demand Forecasting.

Monograph Accession #:

01550057

Report/Paper Numbers:

15-2127

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Kang, Jee Eun
Chen, Anthony

Pagination:

20p

Publication Date:

2015

Conference:

Transportation Research Board 94th Annual Meeting

Location: Washington DC, United States
Date: 2015-1-11 to 2015-1-15
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Subject Areas:

Highways; Planning and Forecasting; Public Transportation; I72: Traffic and Transport Planning

Source Data:

Transportation Research Board Annual Meeting 2015 Paper #15-2127

Files:

TRIS, TRB, ATRI

Created Date:

Dec 30 2014 12:45PM