Online Analysis Tools

NHTS / NPTS Downloads

2001 NHTS
2001 NHTS Transferability
1995 NPTS
1990 NPTS
1983 NPTS

2001 NHTS - Version 4.0, July 2005

Release Notes
Errata

Datasets

File Format	Download Size (MB)	Installed Size (MB)
SAS Transport	63	434
DBase .dbf	66	672
ASCII .csv	61	445

Replicate Weights

Description*	Download Size (MB)	Installed Size (MB)
Household-level Weights	92	112
Person-level Weights	408	514
Long Trip File Weights	74	94
* For analysis of the Vehicle file, use the household-level replicate weight. For analysis of the Travel Day file, use the person-level replicate weight multiplied by 365. See Users Guide sections 7-D and 7-E for additional information.

Trip Chain Datasets* for 2001 NHTS and 1995 NPTS

File Format	Download Size (MB)	Installed Size (MB)
SAS	80	646
* For additional information, see the Trip Chaining handout

Source Code

Title	Description
Formats.sas	SAS PROC FORMAT library
Import.sas	Provides example source code to import the contents of the SAS transport file

2001 NHTS Transferability National Files

Transferring 2001 National Household Travel Survey (ORNL report) [PDF]

Datasets

Description	Download Size (MB)	Installed Size (MB)
Transferability statistics by Tract, CSV format	120	280
Example Tract spreadsheet, Excel 2003 XML format	-	-
Transferability statistics by TAZ, CSV format	4	20
Example TAZ spreadsheet, Excel 2003 XML format	-	-

1995 NPTS

Datasets

File Format	Download Size (MB)	Installed Size (MB)
SAS Transport	33	229
DBase .dbf	30	236
ASCII .csv	30	237

Source Code

Title	Description
Formats.sas	SAS PROC FORMAT library
Import.sas	Provides example source code to import the contents of the SAS transport file
se.shtml	SAS macro to calculate standard errors

1990 NPTS

Datasets

File Format	Download Size (MB)	Installed Size (MB)
SAS Transport	9	67
ASCII .csv	10	82

Travel Day with Adjusted Weights*

File Format	Download Size (MB)	Installed Size (MB)
SAS	6	57
* For additional information, see the Summary of Travel Trends, Appendix 3

1983 NPTS

For additional information including introduction, glossary of terms, Users Guide, reports, and SAS datasets see the FHWA 1983 NPTS Web site.

Datasets

File Format	Download Size (MB)	Installed Size (MB)
SAS Transport	3	39

Source Code

Title	Description
Import.sas	Provides example source code to import the contents of the SAS transport file

This web-based tool was developed by the Center for Transportation Analysis,
Oak Ridge National Laboratory (ORNL) under funding from the Federal Highway Administration