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For any question on data and metadata, please contact: Eurostat user support |
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1.1. Contact organisation | SKSO (Štatistický úrad Slovenskej republiky (Statistical Office of the Slovak Republic)) |
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1.2. Contact organisation unit | BUSINESS STATISTICS SECTION CROSS-SECTIONAL STATISTICS DEPARTMENT |
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1.5. Contact mail address | STATISTICAL OFFICE OF THE SLOVAK REPUBLIC LAMAČSKA CESTA 3/C 840 05 BRATISLAVA 45 SLOVAKIA |
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2.1. Metadata last certified | 29/04/2024 | ||
2.2. Metadata last posted | 29/04/2024 | ||
2.3. Metadata last update | 29/04/2024 |
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3.1. Data description | |||
Road freight data collection consists of three datasets with quarterly periodicity: |
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3.2. Classification system | |||
Statistics on carriage of goods by road apply the following statistical classifications:
The optional variable type of cargo follows the Classification of Cargo Types of UNECE (United Nations, Economic Commission for Europe - codes for types of cargo, packages and packaging materials, Recommendation 21 adopted by the Working Party on Facilitation of International Trade Procedures, Geneva, March 1986). |
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3.3. Coverage - sector | |||
Not available. |
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3.4. Statistical concepts and definitions | |||
The main concepts used in Road freight statistics are the following, more details can be found in the Road freight transport methodology manual : A goods road motor vehicle is any single road transport vehicle (lorry), or combination of road vehicles, namely road train (lorry with trailer) or articulated vehicle (road tractor with semi-trailer), designed to carry goods
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3.5. Statistical unit | |||
The reporting unit for road freight transport statistics is the goods road transport vehicle or the local unit (a site of a company, as identified in the national business register). |
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3.6. Statistical population | |||
As the total number of statistical units (most commonly vehicles) is very large, sample surveys are carried out to collect information. |
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3.7. Reference area | |||
The data provided are goods vehicles registered in the declaring country uniquely. |
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3.8. Coverage - Time | |||
Not available. |
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3.9. Base period | |||
Not applicable. |
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Data are collected in tonnes, tonne-kilometres, vehicle-kilometres and in number of journeys (journey data) or in number of basic transport operations (BTO (goods related data)). |
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The road data are collected on a quarterly basis and are reported to Eurostat five months after the end of the reference period. |
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6.1. Institutional Mandate - legal acts and other agreements | |||
National level: European level: |
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6.2. Institutional Mandate - data sharing | |||
National level : The required variables are sent to Eurostat in TXT format and to other national information system needs organizations. From Eurostat : Eurostat submits annually semi-aggregated data (data exchange tables, see Commission Regulation (EU) No 202/2010 amending the Commission Regulation (EC) 6/2003) back to the reporting countries so that they can compile the total road freight transport on their national territories, including the operations by national hauliers and also those of all other reporting countries. These data exchange tables include more detailed breakdowns than the publicly available tables. They also include, for each value, the information on the number of observations that the estimates are based on. In this way, the reporting countries can estimate the reliability of results that they aggregate from the data exchange tables. |
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7.1. Confidentiality - policy | |||
National level:
European level:
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7.2. Confidentiality - data treatment | |||
See 7.1. |
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8.1. Release calendar | |||
Road transport statistics is published at national level annually. |
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8.2. Release calendar access | |||
Not applicable. |
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8.3. Release policy - user access | |||
Not applicable. |
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Road transport statistics is published at national level annually. |
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10.1. Dissemination format - News release | |||
Not relevant. |
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10.2. Dissemination format - Publications | |||
10.3. Dissemination format - online database | |||
10.4. Dissemination format - microdata access | |||
Not applicable. |
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10.5. Dissemination format - other | |||
Not applicable. |
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10.6. Documentation on methodology | |||
National characteristics of surveys, conducted in the reporting countries in 2017, were published in Methodologies used in surveys of road freight transport in Member States, EFTA and Candidate Countries. This latter publication also contains data on response rates, vehicle registers' quality, sampling rates and statistical errors in surveys carried out in 2016. |
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10.7. Quality management - documentation | |||
Not available. |
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11.1. Quality assurance | |||
The SO SR has a quality management system in place. The Quality Manual includes a description of the quality management system and the fulfillment of ISO 9001 requirements. The application of the Manual ensures that all activities that affect the quality of the products being produced are planned, managed, reviewed, evaluated and meet the requirements accepted in the order. The Quality Guide is available at: https://slovak.statistics.sk/wps/portal/ext/aboutus/key.documents/quality.declaration The basis of the whole quality management system is the Code of Practice for European Statistics: https://slovak.statistics.sk/wps/portal/ext/aboutus/key.documents/code.of.practise |
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11.2. Quality management - assessment | |||
Data quality can be assessed as high. There is a set of validation rules and quality checks put in place, which detect various types of issues. In case of any issues detected, the data providers are contacted to provide explanations or/and revise the data accordingly. |
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12.1. Relevance - User Needs | |||
The key users of road transport statistics collected according to the Regulation 70/2012 are:
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12.2. Relevance - User Satisfaction | |||
Since 2009, the Statistical Office of the SR has been conducting customer satisfaction surveys with its products and services at two-year intervals. The aim of the surveys is to get information about the interest and opinions of users on providing and quality of statistical products and services. The information obtained is a valuable source for the further activities of the SO SR. The result of the satisfaction survey in 2017 is available on the website of the SO SR at (only in slovak language): https://slovak.statistics.sk/wps/portal/ext/aboutus/marketing/survey.of.satisfaction |
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12.3. Completeness | |||
Not available. |
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13.1. Accuracy - overall | |||
The SOSR makes great efforts to prevent the occurrence of errors in data and performs a thorough verification of data to detect errors. |
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13.2. Sampling error | |||
Not applicable for road transport data collection. |
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13.3. Non-sampling error | |||
To avoid non-selectable errors, i. errors in the process of collection and processing The SO SR has integrated logical and data controls in the integrated statistical information system at the level of micro-data as well as at the level of aggregated data that are performed during data collection and processing. |
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14.1. Timeliness | |||
Data are normally updated once per quarter. If new annual data (all four quarters of a calendar year) have become available, the annual datasets are also updated together with the quarterly datasets. |
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14.2. Punctuality | |||
Road freight data are transmitted to Eurostat within 5 months after the end of the reference period, as specified in the Regulation (EU) 70//2012. |
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15.1. Comparability - geographical | |||
There are no problems of comparability for road transport data collection with a very high data comparability across countries due to the common legal basis. |
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15.2. Comparability - over time | |||
Comparable time series are available since January 2000. |
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15.3. Coherence - cross domain | |||
Based on the results of these quarterly data, we make corrections to monthly estimates. |
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15.4. Coherence - internal | |||
There are no deviations, statistical outputs are internally consistent. |
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It is estimated on the basis of the reporting unit of the time required to complete the form. |
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17.1. Data revision - policy | |||
The revision policy governs the basic rules and general procedures by which the pre-drafted data is later revised as well as applied in revisions for other reasons. The revision policy and calendar is available on the SO SR website at: https://slovak.statistics.sk/wps/portal/ext/products/revisions |
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17.2. Data revision - practice | |||
The policy described in 17.1 is fully implemented. |
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18.1. Source data | |||
Sampling register used for the survey Name of register: Vehicle Register and Register of operators Name of organisation who maintains the register: Ministry of Interior and Statistical Office Frequency of update: Permanently Frequency of access to draw the samples: Yearly Arrangements for accessing the register: Vehicle register: Annually taken over from administrative sources, Ministry of Interior. Sample survey is updated quarterly. Operator’s register (administrator Statistical Office of the Slovak Republic) is being currently updated. Identifier Code of operators is converted between register. Information obtained from the register: Vehicle register: Vehicle register mark, identifier of operators, type of vehicle, year of production, load capacity and date of input. Operators register: Identifier of operators, type of operators, name of operators, settlement code, settlement name, street and number, ZIP code, NACE code and date of input. Used in stratification: a low form of the vehicle owner (enterprise or tradesman), type of vehicle and loading capacity is used. In the frame of sample survey the region is taking into sampling. The region is not a criterion for strata. Procedure for reminders: Respondent has to send the filled questionnaire in written or electronic form to the Statistical Office within 8 days after the end of the surveyed week. First reminder: If the respondent does not fulfil his obligation within the deadline, a first reminder is sent 2 weeks after the surveyed week. Second reminder: Sent 2 weeks after the 1st reminder. Reminders are automatically generated by the IT system according to the date of the surveyed week. The response rate is adequate. |
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18.2. Frequency of data collection | |||
The frequency of collection is weekly, the results are processed quarterly. |
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18.3. Data collection | |||
Sampling methodology Statistical unit: Tractive vehicle Types of units excluded: None Time unit: 1 week Time units of quarter 1 of 2022 included in the survey: All (13 weeks) Stratification: From survey in 2019 we have a new stratification : Since 2017, the sample has been increased from 10 400 to 13 000 vehicles per year. Recording of weight of goods: Gross-gross weight of goods is collected, i.e. containers are included. Estimation of maximum permissible laden weight: Maximum permissible laden weight is estimated as 1.25 * loading capacity. Calculation of weighting factors:
N = number of vehicles in the register (in a stratum) S = number of questionnaires used in analysis (in A1 dataset) S’ = number of vehicles for which no activity was recorded, but vehicles could be considered as active (holiday, no work, etc.) Additional (optional) variables collected compared to the legal requirements: Environmental impact-related variables: Type of fuel used and fuel consumption. A1. Vehicle-related variables:
A2. Journey-related variables:
A3. Goods-related variables:
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18.4. Data validation | |||
National level : Data validation is embedded in the program that collects and processes data. The following checks are distinguished when collecting data: From Eurostat : Since 1999, micro-data from the reporting countries have to be submitted according to Commission Regulation 2163/2001. The data are then checked and validated by EUROSTAT (verification of many different codes used (NUTS 3, numeric or alphabetic variables) correctness of linked questionnaires in the different dataset, etc…). Detected errors are then reported back to the data sender with the request for correction, this is an iterative process until at least 99.5% of all data records are validated and loaded in the database. |
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18.5. Data compilation | |||
See 18.4. |
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18.6. Adjustment | |||
Road freight data are not seasonally adjusted. |
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No comment to add. |
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