National road network - National road network by road category and type of pavement| Contact |
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| Contact organisation | National Statistical Institute |
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| Contact organisation unit | „Short-term business statistics and transport statistics “ Department |
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| Contact name | Rositsa Ivancheva |
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| Contact person function | Chief expert |
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| Contact mail address | 2, P.Volov Str. Sofia 1038, Bulgaria |
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| Contact email address | rsivancheva@nsi.bg |
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| Contact phone number | +359 2 9857 101 |
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| Contact fax number | |
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| Metadata update |
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| Metadata last certified | 04 September 2023 |
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| Metadata last posted | 04 September 2023 |
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| Metadata last update | 04 September 2023 |
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| Statistical presentation |
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| Data description | Data on national road network refers to: - Road category - motorways, category I, II, III roads;
- Type of pavement - bituminized, cobblestones, crushed stones, coarse aggregate and unpaved roads.
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| Classification system | · The classification of National roads is made by conditions and order set by the Council of Ministers; · Glossary for transport statistics· Classification of Territorial Units for Statistical Purposes in Bulgaria - NUTS ; · Glossary for transport statistics - - Geneva 2003. |
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| Sector coverage | The National road network (NRN) ensures the connections between the built-up areas in the country and those with other countries for transport of goods and passengers. National roads are classified according to their administrative and economic importance and functions for the transport system in the following classes: motorways and roads of the first, second and third class, which ensure national significance transport connections and give the length of the state road network. Separate national roads are included in the Trans-European road network. |
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| Statistical concepts and definitions | According to road category NRN includes: Motorways - roads designed exclusively for high-speed vehicular traffic. They have separate carriageways for traffic in each direction with a dividing strip between them, emergency stopping lane and crossing other roads or railroads at a different level. The maximum speed is 140 km / h. I-st category roads –designed for transit traffic on big distances /mainly from border to border/. They service big territories and coincide with the major transport fluxes in the country. II-nd category roads - designed for transit traffic on medial distances. They have distributing functions and provide optimal routes for transit traffic to different country regions. III-rd category roads - roads within the boundaries of built-up areas that are part from roads higher category. Ensure the connection between the different municipalities as well those to local roads. According to type of pavement: Bituminized road surface - for all types of traffic; Cobblestones - often used for roads with major traffic; Crushed stones - used for local roads with light traffic; Coarse aggregate - used for local roads with very light traffic. Unpaved roads. Usually these are forest, tractor and cart roads without a special coating. |
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| Statistical unit | Source of data is "Road Infrastructure" Agency. Data are transmitted annually. |
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| Statistical population | The survey is exhaustive. |
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| Reference area | For the Republic of Bulgaria. |
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| Time coverage | Since 1995. |
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| Base period | Not applicable. |
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| Unit of measure |
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Kilometres |
| Reference period |
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Annual |
| Institutional mandate |
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| Legal acts and other agreements | · Law on roads (29.03.200) SG, issue 26/2000 (last amended, SG issue 53 from 13.07.2012); · Regulation for implementation of Law on roads (Decree No 245 of Council of Ministers from 24.11.200) in force from 01.12.2000. |
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| Data sharing | Not applicable. |
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| Confidentiality |
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| Confidentiality - policy | Data are published aggregated by districts and are not confidential. |
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| Confidentiality - data treatment | Not applicable. |
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| Release policy |
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| Release calendar | Data are published according to the deadlines set in the Release calendar - 6 months after the reference period. |
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| Release calendar access | The calendar is available on the NSI website: http://www.nsi.bg/en/node/480 |
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| User access | Data are published on the Internet site of NSI and can be accessed from all users of statistical information. |
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| Frequency of dissemination |
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Annual |
| Accessibility and clarity |
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| News release | Not applicable. |
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| Publications | · Statistical Yearbook; · Statistical Reference Book; · "Bulgaria" (brochure); . International questionnaries. |
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| On-line database | Data on National road network are available to all users of the NSI website under the heading Domain statistics - Transport and Communications - Other annual data - Transport: http://www.nsi.bg/en/node/7201 |
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| Micro-data access | Not applicable. |
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| Other | Not applicable. |
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| Documentation on methodology | · Law on roads (29.03.200) SG, issue 26/2000 (last amended, SG issue 53 from 13.07.2012); · Regulation for implementation of Law on roads (Decree No 245 of Council of Ministers from 24.11.200) in force from 01.12.2000. |
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| Quality documentation | Not available. |
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| Quality management |
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| Quality assurance | After receiving the information quality checks and data validation are made. By identifying errors, the necessary corrections are made with the cooperation of "Road Infrastructure" Agency. |
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| Quality assessment | Not applicable. |
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| Relevance |
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| User needs | Main users are state and international institutions. |
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| User satisfaction | No information. |
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| Completeness | All roads part from NRN are covered. |
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| Accuracy and reliability |
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| Overall accuracy | The survey is exhaustive and is conducted by "Road Infrastructure" Agency. |
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| Sampling error | Not applicable. |
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| Non-sampling error | Not applicable. |
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| Timeliness and punctuality |
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| Timeliness | Data are annual and are published 6 months after the reference period. |
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| Punctuality | Data are published according to the deadlines set in the Release calendar of NSI. |
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| Coherence and comparability |
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| Comparability - geographical | Comparable at European level. |
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| Comparability - over time | Data are from 1995 without any breaks in the time series.Since 2002 IV category roads have been excluded from the National Road Network and have been included in municipality roads network. |
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| Coherence - cross domain | Not applicable. |
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| Coherence - internal | Not applicable. |
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| Cost and burden |
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Cost and Burden are defined by "Road Infrastructure" Agency. |
| Data revision |
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| Data revision - policy | According to the rules for data publishing revision of data can be made when it is necessary. |
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| Data revision - practice | See 19.1. |
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| Statistical processing |
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| Source data | Source of data is "Road Infrastructure" Agency. |
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| Frequency of data collection | Annual |
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| Data collection | The survey is exhaustive. |
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| Data validation | Not applicable. |
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| Data compilation | The primary data checks are made by "Road Infrastructure" Agency. Additional treatment of the information is necessary for publication purposes. |
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| Adjustment | Not applicable. |
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| Comment |
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