README for Truck Inventory and Use Survey (TIUS) 1972 dataset.
Bureau of Transportation Statistics (BTS), U.S. Department of Transportation (USDOT)
2022-11-22

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LINKS TO DATASET
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A. Dataset archive link: 
	https://doi.org/10.21949/1529852

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SUMMARY OF DATASET
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The census of transportation, together with the censuses of retail and wholesale trade, selected service industries, manufactures, mineral industries, and construction industries comprise the economic census program of the Bureau of the Census. This program is required by law under Title 13 of the United States Code, sections 131 and 224. The present economic census collects statistics for the year 1972. Future censuses are scheduled by law for 5-year intervals. A large segment of transportation data is available from regulatory and other government agencies, and private organizations. For that reason, the statutory provisions concerning the census of transportation directed the Bureau to collect the kinds of data that were not publicly available from other sources. The objective was to avoid duplication and fill important gaps in transportation information. The census of transportation was undertaken for the first time on a national basis in 1963 and again in 1967. The 1972 census was taken under three separate surveys-National Travel, Truck Inventory and Use, and Commodity Transportation, each on a sample basis. The surveys are independent of each other and the results are published in three distinct series of reports.

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TABLE OF CONTENTS
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A. General Information
B. Sharing/Access & Policies Information
C. Data and Related File Overview
D. Methodological Information
E. Data-Specific Information for: Truck Inventory and Use Survey (TIUS) 1972 [datasets]
F. Update Log

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A. GENERAL INFORMATION
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0. Title of Dataset: 
   Truck Inventory and Use Survey (TIUS) 1972 [datasets]

1. Description of Dataset:
The census of transportation, together with the censuses of retail and wholesale trade, selected service industries, manufactures, mineral industries, and construction industries comprise the economic census program of the Bureau of the Census. This program is required by law under Title 13 of the United States Code, sections 131 and 224. The present economic census collects statistics for the year 1972. Future censuses are scheduled by law for 5-year intervals. A large segment of transportation data is available from regulatory and other government agencies, and private organizations. For that reason, the statutory provisions concerning the census of transportation directed the Bureau to collect the kinds of data that were not publicly available from other sources. The objective was to avoid duplication and fill important gaps in transportation information. The census of transportation was undertaken for the first time on a national basis in 1963 and again in 1967. The 1972 census was taken under three separate surveys-National Travel, Truck Inventory and Use, and Commodity Transportation, each on a sample basis. The surveys are independent of each other and the results are published in three distinct series of reports.

2. Dataset archive link: 
       https://doi.org/10.21949/1529852

3. Authorship Information:
   Principal Data Creator or Data Manager Contact Information
           Institution: Bureau of Transportation Statistics, U.S. 
   Department of Transportation
           Address: 1200 New Jersey Ave SE, Washington D.C. 20590
           Email: http://transportation.libanswers.com/form.php?queue_id=1810 

   Associate Data Creator or Data Manager Contact Information
        Name: Office of Data Development and Standards 
           Institution: Bureau of Transportation Statistics, U.S. 
   Department of Transportation
           Address: 1200 New Jersey Ave SE, Washington D.C. 20590
           Email: VIUS@dot.gov

   Organizational Contact Information
        Name: National Transportation Library Data Curator
           Institution: National Transportation Library, Office of Information and Library Sciences, 
   Bureau of Transportation Statistics, U.S. Department of Transportation
           Address: 1200 New Jersey Ave SE, Washington D.C. 20590
           Email: ntldatacurator@dot.gov 
	   
4. Date of data collection and update interval:
   Every 5 years

5. Geographic location of data collection: 
   United States of America

6. Information about funding sources that supported the collection of the data:
   Bureau of Transportation Statistics, U.S. Department of Transportation


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B. SHARING/ACCESS & POLICIES INFORMATION 
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0. Recommended citation for the data: 
   U.S. Department of Transportation, Bureau of Transportation Statistics. (1974). Truck Inventory and Use Survey (TIUS) 1972 [datasets]. https://doi.org/10.21949/1529852

1. Licenses/restrictions placed on the data:
   These data are in the Public Domain.

2. Was data derived from another source?:
   No.
   
3. This dataset and its documentation was created and shared to meet the requirements enumerated in the U.S. Federally-Funded Scientific Research" Version 1.1 << https://doi.org/10.21949/1520559 >> and guidelines suggested by the DOT Public Access website << https://doi.org/10.21949/1503647  >>, in effect and current as of December 03, 2020. 


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C. DATA & RELATED FILE OVERVIEW
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For the 1972 Truck Inventory and Use Survey, the data is broken up into data for the entire United States and Data for each of the 50 states and the District of Columbia. For each state, there are 8 tables. These tables include:
* Table 1 Comparative Summary 1963, 1967, and 1972
* Table 2 Trucks, Truck-Miles, and Average Miles, by Vehicle and Operational Characteristics 1972
* Table 3 Sampling Variability of Data
* Table 4 TRUCKS-Percent Distribution of Major Use Classes, by Vehicle and Operational Characteristics 1972
* Table 5 TRUCKS-Percent Distribution of Size Classes, by Vehicle and Operational Characteristics 1972
* Table 6 TRUCKS-Percent Distribution of Annual Mileage Classes, by Vehicle and Operational Characteristics 1972
* Table 7 TRUCKS-Percent Distribution of Ranges of Operation, by Vehicle and Operational Characteristics 1972
* Table 8 TRUCKS-Percent Distribution of Truck Types and Axle Arrangements, by Vehicle and Operational Characteristics 1972

Each state contains each of these 8 tables with the following file naming pattern: 

bts_TIUS_1972_data_[State Name]_[Table Name]

An example of a complete table name is:

bts_TIUS_1972_data_Alabama_Table 1 Comparative Summary 1963, 1967, and 1972


In this example, this file is the TIUS 1972 Comparative Summary across 1963, 1967, and 1972 for the state of Alabama.

For the United States data tables, there are 35 individual data tables with their own unique name. To see the complete list of data table file names, please consult the file structure documentation below. In addition to the data tables, there are 7 files that contain the map and figures information from the report. These file names and their location in the zip file are also included below. 

File Structure for the bts_TIUS_1972_DATA_and_Documentation.zip collection      
	1. BTS_TIUS_1972_DATA_and_Documentation.zip
		a. 1972_States
			i. TIUS 1972 Alabama
			ii. TIUS 1972 Alaska
			iii. TIUS 1972 Arizona
			iv. TIUS 1972 Arkansas
			v. TIUS 1972 California
			vi. TIUS 1972 Colorado
			vii. TIUS 1972 Connecticut
			viii. TIUS 1972 Delaware
			ix. TIUS 1972 Florida
			x. TIUS 1972 Georgia
			xi. TIUS 1972 Hawaii
			xii. TIUS 1972 Idaho
			xiii. TIUS 1972 Illinois
			xiv. TIUS 1972 Indiana
			xv. TIUS 1972 Iowa
			xvi. TIUS 1972 Kansas
			xvii. TIUS 1972 Kentucky
			xviii. TIUS 1972 Louisiana
			xix. TIUS 1972 Maine
			xx. TIUS 1972 Maryland
			xxi. TIUS 1972 Massachusetts
			xxii. TIUS 1972 Michigan
			xxiii. TIUS 1972 Minnesota
			xxiv. TIUS 1972 Mississippi
			xxv. TIUS 1972 Missouri
			xxvi. TIUS 1972 Montana
			xxvii. TIUS 1972 Nebraska
			xxviii. TIUS 1972 Nevada
			xxix. TIUS 1972 New Hampshire
			xxx. TIUS 1972 New Jersey
			xxxi. TIUS 1972 New Mexico
			xxxii. TIUS 1972 New York
			xxxiii. TIUS 1972 North Carolina
			xxxiv. TIUS 1972 North Dakota
			xxxv. TIUS 1972 Ohio
			xxxvi. TIUS 1972 Oklahoma
			xxxvii. TIUS 1972 Oregon
			xxxviii. TIUS 1972 Pennsylvania
			xxxix. TIUS 1972 Rhode Island
			xl. TIUS 1972 South Carolina
			xli. TIUS 1972 South Dakota
			xlii. TIUS 1972 Tennessee
			xliii. TIUS 1972 Texas
			xliv. TIUS 1972 Utah
			xlv. TIUS 1972 Vermont
			xlvi. TIUS 1972 Virginia
			xlvii. TIUS 1972 Washington
			xlviii. TIUS 1972 Washington District of Columbia
			xlix. TIUS 1972 West Virginia
			l. TIUS 1972 Wisconsin
			li. TIUS 1972 Wyoming
		b. 1972_United_States
			i. 1972_United_Sates_Data_Tables
				1. bts_TIUS_1972_data_APPENDIX D Revised Federal Highway Administration (FHWA) Total Truck Inventory by State.xlsx
				2. bts_TIUS_1972_data_TABLE 1 Comparative Summary 1963, 1967, and 1972.xlsx
				3. bts_TIUS_1972_data_TABLE 10 TRUCKS Distribution of Principal Products Carried, by Geographic Division and Major Use of Vehicle 1972.xlsx
				4. bts_TIUS_1972_data_TABLE 11 TRUCK-MILES Percent Distribution of Major Use Classes, by Vehicle and Operational Characteristics 1972.xlsx
				5. bts_TIUS_1972_data_TABLE 12 TRUCK-MILES Percent Distribution of Size Classes, by Vehicle and Operational Characteristics 1972.xlsx
				6. bts_TIUS_1972_data_TABLE 13 TRUCK-MILES Percent Distribution of Annual Mileage Classes, by Vehicle and Operational Characteristics 1972.xlsx
				7. bts_TIUS_1972_data_TABLE 14 TRUCK-MILES Percent Distribution of Ranges of Operation, by Vehicle and Operational Characteristics 1972.xlsx
				8. bts_TIUS_1972_data_TABLE 15 TRUCK-MILES Percent Distribution of Truck Types and Axle Arrangements, by Vehicle and Operational Characteristics 1972.xlsx
				9. bts_TIUS_1972_data_TABLE 16 PICKUP TRUCKS Trucks. Truck-Miles, and Average Miles by Vehicle and Operational Characteristics 1972.xlsx
				10. bts_TIUS_1972_data_TABLE 17 PANEL TRUCKS Trucks, Trucks-Miles, and Average Miles by Vehicle and Operational Characteristics 1972.xlsx
				11. bts_TIUS_1972_data_TABLE 18 MULTISTOP OR WALK-IN TRUCKS Trucks, Truck-Miles, and Average Miles by Vehicle and Operational Characteristics 1972.xlsx
				12. bts_TIUS_1972_data_TABLE 19 LIGHT TRUCKS Trucks, Truck-Miles, and Average Miles, by Geographic Division and State 1972.xlsx
				13. bts_TIUS_1972_data_TABLE 2 Trucks, Truck-Miles, and Average Miles, by Vehicle and Operational Characteristics 1972.xlsx
				14. bts_TIUS_1972_data_TABLE 20 MEDIUM TRUCKS Trucks, Truck-Miles, and Average Miles, by Geographic Division and State 1972.xlsx
				15. bts_TIUS_1972_data_TABLE 21 LIGHT-HEAVY TRUCKS Trucks, Truck-Miles and Average Miles, by Geographic Division and State 1972.xlsx
				16. bts_TIUS_1972_data_TABLE 22 HEAVY-HEAVY TRUCKS Trucks, Truck-Miles and Average Miles, by Geographic Division and State 1972.xlsx
				17. bts_TIUS_1972_data_TABLE 23 TRUCKS FOR PERSONAL TRANSPORTATION Trucks, Truck-Miles, and Average Miles, by Geographic Division and State 1972.xlsx
				18. bts_TIUS_1972_data_TABLE 24 TRUCKS FOR AGRICULTURE Trucks, Truck-Miles, and Average Miles, by Geographic Division and State 1972.xlsx
				19. bts_TIUS_1972_data_TABLE 25 TRUCKS FOR CONSTRUCTION Trucks, Truck-Miles, and Average Miles, by Geographic Division and State 1972.xlsx
				20. bts_TIUS_1972_data_TABLE 26 TRUCKS FOR MANUFACTURING Trucks, Truck-Miles, and Average Miles, by Geographic Division and State 1972.xlsx
				21. bts_TIUS_1972_data_TABLE 27 TRUCKS FOR WHOLESALE AND RETAIL TRADE Trucks. Truck-Miles, and Average Miles, by Geographic Division and State 1972.xlsx
				22. bts_TIUS_1972_data_TABLE 28 TRUCKS FOR SERVICES Trucks, Truck-Miles, and Average Miles, by Geographic Division and State 1972.xlsx
				23. bts_TIUS_1972_data_TABLE 29 TRUCKS FOR HIRE Trucks, Truck-Miles, and Average Miles, by Geographic Division and State 1972.xlsx
				24. bts_TIUS_1972_data_TABLE 3 Sampling Variability of Data.xlsx
				25. bts_TIUS_1972_data_TABLE 30 TRUCKS FOR UTILITIES Trucks, Truck-Miles, and Average Miles, by Geographic Division and State 1972.xlsx
				26. bts_TIUS_1972_data_TABLE 31 LOCAL RANGE OF OPERATION Trucks, Truck-Miles, and Average Miles, by Geographic Division and State 1972.xlsx
				27. bts_TIUS_1972_data_TABLE 32 SHORT RANGE OF OPERATION Trucks, Truck-Miles, and Average Miles, by Geographic Division and State 1972.xlsx
				28. bts_TIUS_1972_data_TABLE 33 LONG RANGE OF OPERATION Trucks, Truck-Miles, and Average Miles, by Geographic Division and State 1972.xlsx
				29. bts_TIUS_1972_data_TABLE 4 TRUCKS Percent Distribution of Major Use Classes, by Vehicle and Operational Characteristics 1972.xlsx
				30. bts_TIUS_1972_data_TABLE 5 TRUCKS Percent Distribution of Size Classes, by Vehicle and Operational Characteristics 1972.xlsx
				31. bts_TIUS_1972_data_TABLE 6 TRUCKS Percent Distribution of Annual Mileage Classes, by Vehicle and Operational Characteristics 1972.xlsx
				32. bts_TIUS_1972_data_TABLE 7 TRUCKS Percent Distribution of Ranges of Operation, by Vehicle and Operational Characteristics 1972.xlsx
				33. bts_TIUS_1972_data_TABLE 8 TRUCKS Percent Distribution of Truck Types and Axle Arrangements, by Vehicle and Operational Characteristics 1972.xlsx
				34. bts_TIUS_1972_data_TABLE 9 TRUCKS Distribution of Body Types by Load Size 1972.xlsx
				35. bts_TIUS_1972_data_TABLE A Trucks, Truck-Miles, and Average Miles by Geographic Division and State 1972.xlsx
			ii. United States 1972 Maps and Figures
				1. 1972_united_states_figure1_manual.xlsx
				2. 1972_united_states_figure2_manual.xlsx
				3. 1972_united_states_figure3_manual.xlsx
				4. 1972_united_states_figure4_manual.xlsx
				5. 1972_united_states_figure5_manual.xlsx
				6. 1972_united_states_figure6_manual.xlsx
				7. 1972_united_states_figure7_manual.xlsx
		c. bts_TIUS_1972_DMP.pdf
		d. bts_TIUS_1972_Metadata.json
		e. bts_TIUS_1972_README.txt

*Each US State contains the following files:
	1. Table 1 Comparative Summary 1963, 1967, and 1972
	2. Table 2 Trucks, Truck-Miles, and Average Miles, by Vehicle and Operational Characteristics 1972
	3. Table 3 Sampling Variability of Data
	4. Table 4 TRUCKS-Percent Distribution of Major Use Classes, by Vehicle and Operational Characteristics 1972
	5. Table 5 TRUCKS-Percent Distribution of Size Classes, by Vehicle and Operational Characteristics 1972
	6. Table 6 TRUCKS-Percent Distribution of Annual Mileage Classes, by Vehicle and Operational Characteristics 1972
	7. Table 7 TRUCKS-Percent Distribution of Ranges of Operation, by Vehicle and Operational Characteristics 1972
	8. Table 8 TRUCKS-Percent Distribution of Truck Types and Axle Arrangements, by Vehicle and Operational Characteristics 1972

In addition to the data tables, there are 3 documents that are included to share information about these datasets. One is the README text file, this document. The README.txt file that includes human-readable information about the data, variable definitions, contact information, and other contextual information. The other is the machine-readable JSON file in DCAT US version 1.1 schema that contains the datas metadata. Lastly, there is a Data Management Plan PDF document that was created for current and future management of the data and associated files. All these files contain significant preservation and creation information about these datasets and provide context to the survey.


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D. METHODOLOGICAL INFORMATION
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1. Description of methods used for collection/generation of data: 
   Due to limited documentation the methodology behind the Truck Inventory and Use Survey (TIUS) 1972 dataset isn't complete.

2. Instrument- or software-specific information needed to interpret the data:
   The data and documentation files can be opened with any text reader. Some versions of the documentation files may be opened with PDF reading software.


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E. DATA-SPECIFIC INFORMATION  
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Because of the innumerous amount of data tables created for the year 1972 TIUS, 450, counting the number of rows and columns is too extraneous for this project. Additionally, because these data tables are summaries of the data and not the raw data itself, there are no variables to define, so there is no data dictionary. In the case of null or blank data, this means that the data was either not reported, not applicable, or as reported depending on the question. For these data tables, each null or blank value is explained with footnotes and in the reports.


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F. UPDATE LOG
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This bts_tius_1967_README.txt file was originally created on 2021-07-09 by Zoe Mann https://orcid.org/0000-0002-0198-0915 STIPDG 2021 Summer Intern, zoe.mann.ctr@dot.gov

[Note changes or update to the readme.txt file, e.g.:]

2021-07-09: Original file created
2023-11-22: Adjusted for final publication

