Title: URBAN FREIGHT TRANSPORT AND LOGISTICS: AN ACQUISITION MODEL
Abstract: Today the European transport system must solve several major difficulties: • unequal growth in the different transportation modes; road haulage now makes up 44% of the goods transport market compared with 41% for short sea shipping, 8% for rail and 4% for inland waterways (White Paper, 2001); • congestion on the main road and rail routes, in towns, and at airports; • harmful effects on the environment and public health, and the heavy toll of road accidents (White Paper, 2001). Demand models are a key component in transportatio n planning at the strategic, tactical and operational levels. Public agencies seek to forecast future transport needs for both people and commodities in order to provide the infrastructure and human resources that make such movement possible. The private sector needs forecasts of demand for transportation services in order to anticipate, among other things, future financial commitments, equipment acquisition and labour requirements. In many European countries transport models are available and many of these are developed for passengers at National or European scale and only two model systems were developed to analyse freight explicitly: the Italian strategic DSS and the European Streams model. Both models estimate the freight matrices from regional economic approaches and use freight data for calibration and validation (Lundqvist and Mattsson, 2001). The Italian strategic DSS is an integrated system for transport analysis and concerns both passengers and freight. It combines spatial input-output models with random utility mode and path choice (Cascetta et alii, 1996; Russo, 2001). Multi-regional input-output models produce region to region flow matrices for each economic sector. These outputs are expressed in monetary terms and then they are transformed in freight quantities. The following step contains an aggregate statistic-descriptive model that splits the od matrices. Recent studies have developed the discrete choice model: consignment for consumer goods and logistics for capital goods. Recent work has been carried out to develop an international modal choice model based on a behavioural approach (Nuzzolo and Russo 1997; Cascetta, 2001). To analyse the passenger and freight movements within European countries another model called Streams was developed. It has these main characteristics: the passengers and freight have independent components; it
Publication Year: 2003
Publication Date: 2003-01-01
Language: en
Type: article
Access and Citation
Cited By Count: 3
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot