Data Dictionary: ACS 2007 (1-Year Estimates)
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Data Source: U.S. Census Bureau
Table: B08532. Means Of Transportation To Work By Time Arriving At Work From Home For Workplace Geography [90]
Universe: Workers 16 years and over who did not work at home
Table Details
B08532. Means Of Transportation To Work By Time Arriving At Work From Home For Workplace Geography
Universe: Workers 16 years and over who did not work at home
Variable Label
B08532001
B08532002
B08532003
B08532004
B08532005
B08532006
B08532007
B08532008
B08532009
B08532010
B08532011
B08532012
B08532013
B08532014
B08532015
B08532016
B08532017
B08532018
B08532019
B08532020
B08532021
B08532022
B08532023
B08532024
B08532025
B08532026
B08532027
B08532028
B08532029
B08532030
B08532031
B08532032
B08532033
B08532034
B08532035
B08532036
B08532037
B08532038
B08532039
B08532040
B08532041
B08532042
B08532043
B08532044
B08532045
B08532046
B08532047
B08532048
B08532049
B08532050
B08532051
B08532052
B08532053
B08532054
B08532055
B08532056
B08532057
B08532058
B08532059
B08532060
B08532061
B08532062
B08532063
B08532064
B08532065
B08532066
B08532067
B08532068
B08532069
B08532070
B08532071
B08532072
B08532073
B08532074
B08532075
B08532076
B08532077
B08532078
B08532079
B08532080
B08532081
B08532082
B08532083
B08532084
B08532085
B08532086
B08532087
B08532088
B08532089
B08532090
Relevant Documentation:
Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2007 Summary File: Technical Documentation.
 
Means of Transportation to Work
The data on means of transportation to work were derived from answers to Question 25, which was asked of people who indicated in Question 23 that they worked at some time during the reference week. (See "Reference Week.") Means of transportation to work refers to the principal mode of travel or type of conveyance that the worker usually used to get from home to work during the reference week.
People who used different means of transportation on different days of the week were asked to specify the one they used most often, that is, the greatest number of days. People who used more than one means of transportation to get to work each day were asked to report the one used for the longest distance during the work trip. The category, "Car, truck, or van," includes workers using a car (including company cars but excluding taxicabs), a truck of one-ton capacity or less, or a van. The category, "Public transportation," includes workers who used a bus or trolley bus, streetcar or trolley car, subway or elevated, railroad, or ferryboat, even if each mode is not shown separately in the tabulation. "Carro público" is included in the public transportation category in Puerto Rico. The category, "Other means," includes workers who used a mode of travel that is not identified separately within the data distribution. The category, "Other means," may vary from table to table, depending on the amount of detail shown in a particular distribution. The means of transportation data for some areas may show workers using modes of public transportation that are not available in those areas (for example, subway or elevated riders in a metropolitan area where there is no subway or elevated service). This result is largely due to people who worked during the reference week at a location that was different from their usual place of work (such as people away from home on business in an area where subway service was available), and people who used more than one means of transportation each day but whose principal means was unavailable where they lived (for example, residents of nonmetropolitan areas who drove to the fringe of a metropolitan area, and took the commuter railroad most of the distance to work).
Limitation of the Data
Beginning in 2006, the group quarters (GQ) population is included in the ACS. Some types of GQ populations have means of transportation distributions that are very different from the household population. The inclusion of the GQ population could therefore have a noticeable impact on the means of transportation to work distribution. This is particularly true for areas with a substantial GQ population.
Question/Concept History
Beginning in 1999, the American Community Survey questions differ from the 1996-1998 questions only in the format of the skip instructions. Beginning in 2004, the category, "Public transportation" was tabulated to exclude workers who used taxicab as their means of transportation.
Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2007 Summary File: Technical Documentation.
 
Time Arriving at Work from Home
The data on time arriving at work from home were derived from answers to Question 27 (Time Leaving Home to Go to Work) and from answers to Question 28 (Travel Time to Work). These questions were asked of people who indicated in Question 23 that they worked at some time during the reference week, and who reported in Question 25 that they worked outside their home. The arrival time is calculated by adding the travel time to work to the reported time leaving home to go to work. These data are presented with other characteristics of workers at their workplace. (See "Time Leaving Home to Go to Work" and "Travel Time to Work.")
Excerpt from: Social Explorer; U.S. Census Bureau; American Community Survey 2007 Summary File: Technical Documentation.
 
Workplace-based Geography
The characteristics of workers may be shown using either residence-based or workplace-based geography. If you are interested in the number and characteristics of workers living in a specific area, you should use the standard (residence-based) journey-to-work tables. If you are interested in the number and characteristics of workers who work in a specific area, you should use the workplace-based journey-to-work tables. Because place-of-work information for workers cannot always be specified below the place level, the workplace-based tables are presented only for selected geographic areas.
Limitation of the Data
The data on place of work is related to a reference week, that is, the calendar week preceding the date on which the respondents completed their questionnaires or were interviewed. This week is not the same for all respondents because data were collected over a 12-month period. The lack of a uniform reference week means that the place-of-work data reported in the survey will not exactly match the distribution of workplace locations observed or measured during an actual workweek. The place-of-work data are estimates of people 16 years and over who were both employed and at work during the reference week (including people in the Armed Forces). People who did not work during the reference week but had jobs or businesses from which they were temporarily absent due to illness, bad weather, industrial dispute, vacation, or other personal reasons are not included in the place-of-work data. Therefore, the data on place of work understate the total number of jobs or total employment in a geographic area during the reference week. It also should be noted that people who had irregular, casual, or unstructured jobs during the reference week might have erroneously reported themselves as not working. The address where the individual worked most often during the reference week was recorded on the questionnaire. If a worker held two jobs, only data about the primary job (the job where one worked the greatest number of hours during the preceding week) was requested. People who regularly worked in several locations during the reference week were requested to give the address at which they began work each day. For cases in which daily work was not begun at a central place each day, the respondent was asked to provide as much information as possible to describe the area in which he or she worked most during the reference week.
Since both the American Community Survey and the decennial censuses are related to a "reference week" that has some variability, the data do not reflect any single week. Since the American Community Survey data are collected over 12 months, the reference week in American Community Survey has a greater range of variation. (See "Reference Week.")
Question/Concept History
Starting in 1999, the American Community Survey questions differ from the 1996-1998 questions in that the labels on the write-in spaces were modified to provide clarifications. The 2004 American Community Survey marked the first time that workplace-based tables were released as a part of a standard census data product.