National Household Travel Survey, 2001: [United States]

The 2001 National Household Travel Survey is a combination of the Federal Highway Administration's Nationwide Personal Transportation Survey (NPTS) and the Bureau of Transportation Statistics American Travel Survey (ATS), which were conducted separately in previous years. The National Household Travel Survey serves as the nation's inventory of daily personal travel. It collects data on daily trips including purpose of the trip, means of transportation used, travel time, vehicle occupancy, driver characteristics, and vehicle attributes. These data are collected for all personal trips, all modes and purposes, all trip lengths, and all areas of the country, urban and rural. The 2001 National Household Travel Survey collected additional data on trips to a destination 50 miles or more from home (long-distance travel) that started from home and ended at home during a four-week travel period. This was a change from previous years, where the travel range was 75 miles or more. Part 1, the Household File, contains data unique to a household, such as the number of household vehicles, household income, the relationship between household members, demographic information for household members, and educational level of the household respondent. Part 2, the Person File, contains demographic information, driver status, information on travel to work, miles driven, customer satisfaction, and Internet use. Part 3, the Vehicle File, contains data relating to each of the household's vehicles, including annualized vehicle miles. Part 4, the Travel Day Trip File, contains data about each trip the person made on the household's randomly assigned travel day. Parts 5 and 6 are weight files for the Household File (Part 1) and the Person File (Part 2), respectively.

2001年度全国家庭出行调查系联邦公路管理局全国个人交通调查（NPTS）与美国运输统计局的美国出行调查（ATS）相结合而成，这两项调查在前几年分别进行。全国家庭出行调查构成了全国日常个人出行的清单。该调查收集了关于日常出行的数据，包括出行目的、使用的交通工具、旅行时间、车辆载客情况、驾驶员特征以及车辆属性。这些数据涵盖了所有个人出行，包括所有出行方式、目的、出行距离以及全国各地，无论是城市还是乡村。2001年度全国家庭出行调查还收集了在家庭居住地50英里或更远的目的地出行（长途旅行）的数据，这些出行在为期四周的旅行期间从家中出发并返回家中。这与前几年75英里或更远的出行范围有所不同。第一部分，家庭文件，包含了家庭特有的数据，例如家庭车辆数量、家庭收入、家庭成员之间的关系、家庭成员的统计数据以及受访者的教育水平。第二部分，个人文件，包含了统计数据、驾驶员状态、工作出行信息、驾驶里程、客户满意度以及互联网使用情况。第三部分，车辆文件，包含了关于家庭每辆车辆的年度化车辆里程等数据。第四部分，出行日行程文件，包含了关于个人在家庭随机分配的出行日所进行的每趟旅行的数据。第五部分和第六部分分别是家庭文件（第一部分）和个人文件（第二部分）的权重文件。