NHTS Data Center
2009 NHTS
Telephone (CATI) Questionnaire
Telephone (CATI) Questionnaire Extended Interview
Telephone (CATI) Questionnaire Extended Interview
Datasets
| File Format | Download Size (MB) | Installed Size (MB) |
|---|---|---|
| SAS Windows Binary (.sas7bdat) | 83 | 544 |
| SAS Transport | 78 | 486 |
| DBase .dbf | 85 | 895 |
| ASCII .csv | 74 | 477 |
Source Code
| Title | Description |
|---|---|
| Formats.sas | SAS PROC FORMAT library |
2001 NHTS - Version 4.0, July 2005
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 |
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 |
| 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 |