National Travel Survey, 2002-2021: Secure Access

The <i>National Travel Survey</i> (NTS) is a series of household surveys designed to provide regular, up-to-date data on personal travel and monitor changes in travel behaviour over time. The first NTS was commissioned by the Ministry of Transport in 1965. Further periodic surveys were carried out in 1972/73, 1975/76, 1978/79 and 1985/86 (the UK Data Service holds End User Licence data from 1972 onwards and Special Licence and Secure Access data from 2002). Since July 1988 the NTS has been carried out as a continuous survey with field work being carried out in every month of the year, and an annual set sample of over 5,000 addresses. From 2002, the NTS sample was increased approximately threefold, to approximately 15,000 per year. The advantage of the continuous study is that users will be able to discern seasonal and cyclical movements as well as trend changes over time. The NTS is carried out primarily for the purposes of government. The most fundamental use of the National Travel Survey within the Department for Transport (DfT) is as core base data for key transport models. These are critical to the assessment and appraisal of transport scheme proposals (national and local), transport policy proposals, and contribute to the development of our long-term strategy. The NTS data is used to develop consistent sets of transport policies. Because it relates travel to travellers, it makes it possible to relate policies to people and to predict their impact. The survey provides detailed information on different types of travel: where people travel from and to, distance, purpose and mode. The NTS records personal and socio-economic information to distinguish between different types of people, and the differences in the way they travel and how often they do so. The NTS is the only source of national information on subjects such as walking which provide a context for the results of more local studies.<br> <br> Further information may be found on the gov.uk <a href="https://www.gov.uk/government/collections/national-travel-survey-statistics" title="National Travel Survey">National Travel Survey</a> web page.<br> <br> <b>End-User Licence, Special Licence and Secure Access NTS data</b><br> The UK Data Archive also holds End User Licence (EUL) NTS data from 1972 onwards (see SNs 2852, 2853, 2855, 3288, 4108, 4583-4585, 6108 and 5340) and Special Licence (SL) NTS data from 1995 onwards (SNs 7804 and 7553). The EUL versions contain a comprehensive range of NTS data at Government Office Region geographic level and should be sufficient for most research needs. The SL versions contain more detailed travel (including accidents), demographic and socio-economic data, and the geographic level is Local Authority/Unitary Authority. These data are subject to more restricted access conditions than EUL. The Secure Access version contains more detailed information and postcode sector geographies. Secure Access data are subject to further restricted access conditions, including the completion of a training course. For full details of the differences between the EUL, SL and Secure Access NTS, see the document '7559_nts_table_structures.xls' in the documentation. Users should always check whether the EUL and SL versions are suitable for their research needs before considering making an application for the Secure Access version.<br> <br> <div><span style="font-style: italic;">2020 and 2021 Disclaimer: </span></div>Due to changes in the methodology of data collection, changes in travel behaviour and a reduction of data collected during 2020 and 2021, as a result of the coronavirus (COVID-19) pandemic, care should be taken when interpreting this data and comparing to other years, due to the small sample sizes. Please see the background documentation for further details of these changes.<br><br><span style="font-style: italic;">Latest edition information:</span><br>For the ninth edition (April 2023), the variable ‘HHoldOACode2011’ (ONS Output Area of residence - 2011 Census) in the Household file was amended.

<i>国家出行调查（National Travel Survey, NTS）</i>是一系列家庭调查项目，旨在定期提供最新的个人出行数据，并实时追踪出行行为随时间的变化。首次国家出行调查于1965年由英国交通部委托开展。后续分别于1972/73、1975/76、1978/79及1985/86年开展了周期性调查（英国数据服务中心（UK Data Service）持有1972年起的最终用户许可数据，以及2002年起的特殊许可与安全访问数据）。自1988年7月起，国家出行调查转为连续性调查，全年每月均开展实地工作，年度固定样本量超过5000个家庭地址。2002年起，调查样本量扩大约至原规模的三倍，达到每年约15000个。连续性调查的优势在于，研究人员能够同时识别出行行为的季节性、周期性波动与长期趋势变化。<br><br>本调查主要为政府部门服务。英国交通部（Department for Transport, DfT）对国家出行调查的核心应用，是将其作为关键交通模型的基础核心数据。这些模型对于评估和审批全国及地方交通方案提案、交通政策提案至关重要，并为制定长期交通战略提供支撑。国家出行调查的数据被用于构建统一的交通政策体系。由于该调查将出行行为与出行者本身关联起来，因此能够将政策与特定人群绑定，并预测政策实施后的影响。该调查提供了不同类型出行的详细信息：包括出行起止地点、出行距离、出行目的与出行方式。国家出行调查还记录了个人与社会经济信息，以区分不同人群的出行特征、出行习惯与出行频率。国家出行调查是步行出行等主题的全国性唯一信息来源，可为更多地方性研究结果提供背景参照。<br><br>更多详细信息可查阅gov.uk网站上的<a href="https://www.gov.uk/government/collections/national-travel-survey-statistics" title="国家出行调查">国家出行调查</a>官方网页。<br><br><b>最终用户许可、特殊许可与安全访问版国家出行调查数据</b><br>英国数据档案馆（UK Data Archive）同样持有1972年起的最终用户许可（End User Licence, EUL）版国家出行调查数据（对应序列编号SN 2852、2853、2855、3288、4108、4583-4585、6108与5340），以及1995年起的特殊许可（Special Licence, SL）版国家出行调查数据（对应序列编号SN 7804与7553）。最终用户许可版数据包含政府办公区域地理层级下的全范围国家出行调查数据，可满足绝大多数研究需求。特殊许可版数据则包含更详细的出行（含事故信息）、人口统计与社会经济数据，地理层级为地方当局/单一管理区。此类数据的访问限制相较于最终用户许可版更为严格。安全访问版数据包含更详细的信息与邮编片区地理层级数据，其访问限制进一步提升，包括需完成相关培训课程方可申请。如需了解最终用户许可版、特殊许可版与安全访问版国家出行调查数据的具体差异，请查阅文档‘7559_nts_table_structures.xls’。研究人员在申请安全访问版数据前，应先确认最终用户许可版与特殊许可版数据是否满足自身研究需求。<br><br><div><span style="font-style: italic;">2020与2021年数据声明：&nbsp;</span></div>受2019冠状病毒病（COVID-19）疫情影响，2020年与2021年的调查数据收集方法、出行行为均发生变化，且采集数据量有所缩减，同时样本规模偏小。因此在解读此类数据并与其他年份数据进行对比时，需格外谨慎。详细变更信息请查阅背景文档。<br><br><span style="font-style: italic;">最新版本信息：</span><br>第九版（2023年4月）的家庭文件中，变量‘HHoldOACode2011’（英国国家统计局（Office for National Statistics, ONS）2011年人口普查居住输出区域代码）已完成修订。