1992 CENSUS OF TRANSPORTATION
1992 TRUCK INVENTORY AND USE SURVEY


ABSTRACT FOR TIUS MICRODATA FILE


=>CITATION

1992 Economic Census, Vol 3:  Truck Inventory and Use Survey on
CD-ROM, 1992 prepared by the Bureau of the Census.  Washington: 
The Bureau of the Census [producer and distributor], 1995


=>TYPE OF FILE

Microdata file.  The term microdata refers to the unaggregated
records for individual responses.  The records are modified to
avoid the possibility of identifying individual vehicles,
households or establishments.


=>UNIVERSE DESCRIPTION

The Truck Inventory and Use Survey is based on a probability
sample of private and commercial trucks registered (or licensed)
in each State during 1992.  A sample of 153,914 trucks were
surveyed to measure the universe of over 60 million trucks.


=>SUBJECT-MATTER DESCRIPTION

The Truck Inventory and Use Survey (TIUS) provides data on the
physical and operational characteristics of the Nation's truck
population.  The data available for individual trucks include
weight and type of ownership.  The following data are also
available: leasing information (type, length, and options), major
use and principal products carried (including percent of mileage
carried hazardous material), maintenance information, and
equipment data (engine, brake type, power steering, fuel,
conservation equipment, body and vehicle type, size class, and
cab type), vehicle make, cubic inch displacement, annual and
lifetime miles, and TIUS gross vehicle weight rating (TIUGVW)
code.


=>GEOGRAPHIC COVERAGE

The microdata file is representative of all private and
commercial trucks in the United States.  Each record indicates
the state in which the truck is registered and whether the home
base is inside or outside a Metropolitan Statistical Area (MSA).


=>SOFTWARE ACCESS

DOCVIEW

This software, included on this CD-ROM, allows users to view or
print documentation about the microdata and auxiliary files on
screen.

QUICKTAB

This software, included on this CD-ROM, provides access to every
data item in the microdata file.


=>RELEASE SCHEDULE

The microdata file is produced following the completion of the
TIUS US Summary file and content approval by the Bureau's
Microdata Review panel.


=>FILE CHARACTERISTICS 

TI92MDF.DAT is a 77MB ASCII file containing over 123,000 records. 
Each record contains 624 logical characters representing 394 data
items.