GPU-based Parallel Computing for Activity-based Travel Demand Models

Experimental tour-based travel demand models

In this paper some experimental sequential models for the simulation of trip-chains are presented; the models have been calibrated on the base of a survey made in a medium-sized town. This work is part of a research, effected by the Department of Regional Planning of the University of Calabria, to forecast travel demand and to analyse travel behaviour of the transport system users. (Festa et al...

Activity-based Modeling of Travel Demand

Since the beginning of civilization, the viability and economic success of communities have been, to a major extent, determined by the efficiency of the transportation infrastructure. To make informed transportation infrastructure planning decisions, planners and engineers have to be able to forecast the response of transportation demand to changes in the attributes of the transportation system...

Activity Based Travel Demand Model Systems

Stated simply, the motivation for activity based travel demand modeling is that travel decisions are activity based. Concerns about congestion, emissions and land use patterns have lead governments to consider policies aimed to aaect travel decisions. Examples of policies include employer based commute programs, single occupant vehicle regulation, road pricing, multimodal facilities and transit...

Random Utility-Based Discrete Choice Models for Travel Demand Analysis

Activity-based Disaggregate Travel Demand Model System with Activity Schedules

We propose an integrated activity-based discrete choice model system of an individual’s activity and travel schedule, for forecasting urban passenger travel demand. A prototype demonstrates the system concept using a 1991 Boston travel survey and transportation system level of service data. The model system represents a person’s choice of activities and associated travel as an activity pattern ...