Data for Slovenia

Objectives summarised by: Resolution on Transport Policy of the Republic of Slovenia (RePPRS), OG RS, no. 58/2006 and Operational Programme of Environmental and Transport Infrastructure Development for the Period 2007–2013.
Source database or source: Statistical Yearbooks of the Republic of Slovenia 1996–2008.
Data administrator: Statistical Office of the Republic of Slovenia (SORS).
Date of acquisition for this indicator: 23 June 2009
Methodology and frequency of data collection for the indicator: The data on the modal split in passenger transport in Slovenia is collected by the SORS and published in the regular annual serial publication “Statistical Yearbook of the Republic of Slovenia”. The data on rail transport is reported by Slovenske železnice (Slovenian Railways); since 2004, the data on road passenger transport in public transport is reported by business entities registered for this activity, having a concession contract for the provision of public utility services and performing the public regular transport of passengers in road transport on at least five routes in accordance with the Road Transport Act. However, the transport of passenger performed by private entrepreneurs, taxis and passenger cars is not considered. The data on air transport includes only the largest Slovenian air carrier, which is becoming a huge deficiency due to the increasing share of other air carriers on our market. Therefore, the data in the comment is supplemented by the data on the number of passengers at Jože Pučnik Ljubljana Airport. The data on urban passenger transport refers to transport in Ljubljana and Maribor, and since 2004 also to transport in some other towns with organised urban passenger transport.
Data processing methodology: The modal split in passenger transport is expressed by the indicator of passenger transport demand – passenger kilometres. A passenger kilometre (pkm) is the sum of the multiplication of the number of passengers and distances, on which the passengers were transported (SORS, 2004). The volume of passenger transport is expressed by the sum of all travelled passenger kilometres in the considered area and in the determined time period; the structure is expressed by the share of passenger kilometres by individual transport modes (modal split).
Information concerning data quality:
- Advantages and disadvantages (at data level): The fundamental disadvantages of the indicator is that the data on the volume of transport by passenger cars in Slovenia, similarly to the case in the majority of other new EU Member States, has not been collected. Furthermore, another disadvantages of the indicator is that the data on air transport includes only the largest Slovenian air carrier.
- Relevance, accuracy, robustness, uncertainty (at data level): With the exception of air transport, the data is considered as fairly reliable and accurate.
Reliability of the indicator (archive data): The data refers to a longer time period.
Uncertainty of the indicator (scenarios/projections): Projections have not been prepared.
- Overall assessment (1 = no major comments, 3 = data to be considered with reservation): 2
Relevance: 2 (the data on the volume of transport by passenger cars is not included)
Accuracy: 2 (the data on air transport includes only the largest Slovenian air carrier)
Completeness over time: 1
Completeness over space: 1

Data for other countries

Source database or source:TERM 2006 12b – Modal shares in passenger transport, Indicator Fact Sheet
Data administrator: European Environment Agency (EEA)
Date of acquisition for this indicator: 23 June 2009
Methodology and frequency of data collection for the indicator: The EEA has been obtaining data on the modal shares in passenger transport from the common questionnaire, prepared by Eurostat, the European Conference of Transport Ministers (ECMT) and the United Nations Economic Commission for Europe (UNECE). Since 2003, the data on rail transport within the EU has been collected separately on the basis of the EU Regulation on Rail Transport Statistics (EC no. 91/2003).
Data processing methodology: The missing values were obtained by methods of linear interpolation and extrapolation and by considering the situation in neighbouring countries with a similar level of development in passenger transport.
Geographical coverage: The EEA-23 includes the group of 23 countries for which sufficient data is available. This group is composed of the EU-15 Member States (Belgium, Denmark, Germany, Greece, Spain, France, Ireland, Italy, Luxembourg, the Netherlands, Austria, Portugal, Finland, Sweden and the United Kingdom), 5 new EU-5 Member States (Poland, Czech Republic, Slovakia, Slovenia, and Hungary), plus Norway, Iceland and Turkey.
Information concerning data quality:
- Advantages and disadvantages (at data level): The data on passenger-km is estimated and not directly recorded. However, since the same methodology has been used for many years, the trends generally give a good indication of the developments in passenger transport demand.
- Relevance, accuracy, robustness, uncertainty (at data level): Data is considered to be fairly reliable and consistent for the EU-15; for Central and Eastern European countries the data is generally much less reliable and much less comparable.
Reliability of the indicator (archive data): The data refers to a longer time period.
Uncertainty of the indicator (scenarios/projections): Projections have not been prepared.
- Overall assessment (1 = no major comments, 3 = data to be considered with reservation):
Relevance: 2 (Vehicle-km provides a better unit of measurement, since it is more directly linked to the environmental impact of transport movements)
Accuracy: 3 (Passenger-km figures are estimated (more uncertainty for cars than for buses/trains etc.) rather than measured and vary by source (Eurostat, ECMT, UNECE etc.))
Completeness over time: 2 (some extrapolations for 1990-1992 and 2001)
Completeness over space: 2 (certain differences between countries by not considering some transport modes).

Other sources and literature:
- Ljubljana Airport, 2009: Transport (23 June 2009).
- Slovenian Roads Agency, 2009: Performed kilometres in the period 1997–2007 on state roads in the Republic of Slovenia. Ljubljana, Slovenian Roads Agency (23 June 2009).
- SORS, 2004: Glossary for Transport Statistics. (UNECE, ECMT, Eurostat). Ljubljana, Statistical Office of the Republic of Slovenia (23 June 2009).