2013-2014 Greater Fairbanks, Alaska, Transportation Survey

# 2013–2014 Greater Fairbanks, Alaska, Transportation Survey
The 2013–2014 Greater Fairbanks Transportation Survey obtained behavior data for regional travel demand modeling. The planning region in Alaska comprised the North Star Borough—known as the PM2.5 nonattainment region—and included the cities of Fairbanks and North Pole.

## Data Collection Agency
The Alaska Department of Transportation and Public Facilities conducted the survey.

## Methodology
Data collection occurred in two phases: the first in fall 2013 and the second in winter 2014. The first phase employed address-based sampling to recruit more than 1,700 households for a one-day personal travel survey, and a sub-sample participated with global position system (GPS) and on-board diagnostic (OBD) loggers installed in their vehicles (282 vehicles) for one week. The purpose of phase one was to better understand the impact of vehicle emissions on air quality in the PM2.5 nonattainment region. Many of the households participating in the vehicle GPS/OBD portion of phase one were asked to participate in phase two.

## Drive Cycle Processing and Filtering
NREL has developed a GPS data filtration routine to filter erroneous data points in individual drive cycles sourced from GPS devices mounted in vehicles. Second-by-second drive cycle data collected from GPS-instrumented vehicles during this survey have passed through NREL's drive cycle processing and filtering routines.

## Survey Records
Survey records include 135 households.

## More Information
For more information about the survey, see the [Greater Fairbanks Transportation Survey Final Report](https://www.nrel.gov/media/docs/libraries/tsdc/greater-fairbanks-transportation-survey-final-report.pdf?sfvrsn=16ecd45b_1).

## Transportation Data
For details on available travel survey data and variable definitions, see the [data dictionary](https://www.nrel.gov/media/docs/libraries/tsdc/akdot_data_dictionary.pdf?sfvrsn=16778e11_1).

NREL-generated drive cycle data are also available for this survey. For details on available data and variable definitions, see the [drive cycle data dictionary](https://www.nrel.gov/media/docs/libraries/tsdc/drive_cycles_data_dictionary.pdf?sfvrsn=7de7e888_1).

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

# 2013-2014年阿拉斯加大费尔班克斯交通调查
2013-2014年阿拉斯加大费尔班克斯交通调查旨在获取区域出行需求建模所需的出行行为数据。本次调查覆盖的阿拉斯加规划区域为被划定为PM2.5未达标区域（PM2.5 nonattainment region）的北星自治区（North Star Borough），包含费尔班克斯市与北极市（North Pole）。

## 数据采集机构
本次调查由阿拉斯加州交通与公共设施部（Alaska Department of Transportation and Public Facilities）负责实施。

## 调查方法
数据采集分为两个阶段：第一阶段于2013年秋季开展，第二阶段于2014年冬季实施。第一阶段采用基于地址的抽样方法招募了超过1700户家庭参与为期一天的个人出行调查；其中部分子样本家庭同意在车辆上安装全球定位系统（GPS，global position system）与车载诊断（OBD，on-board diagnostic）记录仪，持续记录时长为一周，共覆盖282台车辆。第一阶段的调查目的在于深入剖析机动车排放对PM2.5未达标区域空气质量的影响。参与第一阶段车辆GPS/OBD数据采集环节的多数家庭受邀参与了第二阶段调查。

## 行驶循环数据处理与滤波
美国国家可再生能源实验室（National Renewable Energy Laboratory，NREL）已开发出一套GPS数据滤波流程，用于滤除车载GPS设备采集的单条行驶循环中的异常数据点。本次调查中搭载GPS设备的车辆所采集的逐秒行驶循环数据，均已通过NREL的行驶循环数据处理与滤波流程。

## 调查记录
本次调查有效记录覆盖135户家庭。

## 更多信息
如需了解本次调查的更多详情，请参阅《大费尔班克斯交通调查最终报告》（Greater Fairbanks Transportation Survey Final Report），链接：https://www.nrel.gov/media/docs/libraries/tsdc/greater-fairbanks-transportation-survey-final-report.pdf?sfvrsn=16ecd45b_1。

## 交通数据
如需了解可获取的出行调查数据与变量定义详情，请参阅《数据字典》（data dictionary），链接：https://www.nrel.gov/media/docs/libraries/tsdc/akdot_data_dictionary.pdf?sfvrsn=16778e11_1。

本次调查还提供NREL生成的行驶循环数据。如需了解该类数据的可用项与变量定义详情，请参阅《行驶循环数据字典》（drive cycle data dictionary），链接：https://www.nrel.gov/media/docs/libraries/tsdc/drive_cycles_data_dictionary.pdf?sfvrsn=7de7e888_1。

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