D5 Annex report WP 3: ETIS Database methodology ... - ETIS plus

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D5 Annex WP 3: DATABASE METHODOLOGY AND DATABASE USER MANUAL – FREIGHT TRANSPORT DEMAND In annex C a description is included of a pilot exercise performed by MDS within the ‘Concerted Action Short Sea Shipping’ project where a method has been tested to estimate regionregion flows from regioncountry data sources (A countries). 4.5.4 Phase IV Incorporating domestic transport The previous phases are completely directed towards international transport. The fourth step concerns the inclusion of domestic transport in the database. A problem arises in the port regions when international and domestic transport is being connected. Transport that is transhipped in a port is registered twice; in the international trade statistics as well as in the domestic transport statistics. For example, a trade flow from Brussels via Antwerp by road to the USA by sea is registered in the domestic transport data as road from Brussels to Antwerp. A procedure will be applied to remove this type of double counting in the database. It reconstructs the complete chain by attaching domestic egress or access modes to the harbour for inland transport. It can be assumed that the transport between inland regions (without a sea port) is determined by domestic production and consumption patterns. Also it can be assumed that front or end transport connecting rail and inland waterways is taking place within the region of origin or destination (intra regional transport). The connection between the two sources of information is complicated by the fact that international trade flow statistics are based on documents that continuously register all trade passing the border, while domestic transport is based on surveys in a short period of time. When necessary, a correction has to be made for this fact in the direction of the trade statistics. The total topdown approach is schematised in figure 4.1. 24 Document2 27 May 2004
D5 Annex WP 3: DATABASE METHODOLOGY AND DATABASE USER MANUAL – FREIGHT TRANSPORT DEMAND Figure 4.1 Topdown Approach 4.6 Data gaps identified The topdown approach described above uses the available data sources to a maximum level. However, for some types of data no sources are available (on the complete EU level). Important data gaps identified are: · International region to region trade and transport flows · Transport mode on the European territory of intercontinental flows · Port transhipment data · Inland terminal transhipment data · Intermodal transport statistics · Container transport data · Commodity characteristics · Transport performance data (number of transport units, loading factors, number of loaded/empty trips) Since no complete data is available for these subjects (or data is available but not on the required level of detail or not for all required regions) estimation procedures have to be applied to fill these data gaps. Document2 27 May 2004 25
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