2017 National Household Travel Survey - Arizona Add-On

# 2017 National Household Travel Survey – Arizona Add-On
The Arizona add-on survey supplements the 2017 National Household Travel Survey (NHTS) with additional household samples and detailed travel behavior for an assigned travel day.

## Data Collection Agency
The Federal Highway Administration conducted the NHTS and corresponding add-on surveys.

## Methodology
This survey documents the demographic, attitudinal, and travel behavior for all members of 2,987 households, as collected from April 2016 to April 2017. Daily travel details provide insight into work and school commutes, non-emergency medical trips, shopping trips, and even how travel differs in the summer and on weekends as compared to a typical weekday when school is in session. When statistically weighted to adjust for survey biases, the data demographically represents all Americans and is appropriate for analysis at the national and census region levels.

## Survey Records
Survey records include a total of 6,081 participants.

## Transportation Data
The NHTS Arizona add-on data package contains a demographic and socioeconomic composition of 6,081 people from 2,987 households in Arizona, as well as detailed information on the travel behavior of each household for a designated 24-hour period. The survey logged more than 258,000 vehicle miles of travel by participants during 19,779 trips.

For details on available data and variable definitions, see the [data dictionary](https://www.nrel.gov/media/docs/libraries/tsdc/data-elements-2017.xlsx?sfvrsn=ad09b18c_3).

Transportation data are available as zipped files. [Download Winzip](http://www.winzip.com/downwz.htm).

# 2017年全国家庭出行调查（National Household Travel Survey，NHTS）亚利桑那附加数据集
本亚利桑那附加调查作为2017年全国家庭出行调查（NHTS）的补充项目，新增了家庭样本规模，并针对指定出行日收集了更精细化的出行行为数据。

## 数据采集机构
美国联邦公路管理局（Federal Highway Administration）负责牵头开展全国家庭出行调查及其配套附加调查项目。

## 研究方法
本次调查于2016年4月至2017年4月间实施，共采集了2987户家庭全体成员的人口统计特征、态度倾向及出行行为数据。每日出行细节可用于深入解析通勤、上下学出行、非紧急医疗出行、购物出行等各类出行场景，还可对比分析暑期、周末与常规上课日工作日的出行差异。经统计加权以修正调查偏差后，该数据集的人口统计分布可代表全美国整体人口，适用于国家级及普查区域级别的分析研究。

## 调查样本
本次调查共纳入6081名参与者。

## 交通出行数据
本亚利桑那附加数据集涵盖亚利桑那州2987户家庭共6081名居民的人口与社会经济构成信息，以及每户家庭在指定24小时周期内的详细出行行为数据。调查共记录参与者完成的19779次出行，累计总行驶里程超25.8万车英里。

如需了解可用数据及变量定义，请查阅[数据字典](https://www.nrel.gov/media/docs/libraries/tsdc/data-elements-2017.xlsx?sfvrsn=ad09b18c_3)。

交通出行数据以压缩包形式提供。[下载Winzip](http://www.winzip.com/downwz.htm)