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Onsdag 1 februari 2017, Clas Rydergren, ITN, Norrköping

Seminariet är ett samarrangemang med Matematiska kollokviet.

Talare: Clas Rydergren, ITN, Norrköping

Titel: New sources of input data for travel demand estimation models

Tid och plats: Onsdag 1 februari 2017, Hopningspunkten, 13.15–14.15

Sammanfattning: Forecasts of how journeys are made, from where and to where, is usually done using simple mathematical models. The results from the models are used as estimates of the load on the transport system. Estimates are made for the load today, in the future, and to estimate the change in travel demand when changes in the infrastructure are made. The model result is critical input to traffic planners.

Different types of models are used depending on, among other things, if the analysis requires the results to include all modes of transport, or not, and the length of the forecast horizon. Models for long-term forecasts (several years) often contain components to describe the travelers' values and perceptions whereas models for the current situation or with a very short forecast horizon, often is based exclusively a network model and data from dedicated traffic measurements.

During this seminar, I will present an example of a traditional demand model, and exemplify how this model is used. The ongoing digitization have led to new sources of input data for this type of models. I will exemplify this by presenting inputs used in a couple of research projects ongoing at the Division of Communications and Transport System (KTS) at ITN.


Sidansvarig: karin.johansson@liu.se
Senast uppdaterad: 2017-03-21