| Title | Customized sampling plans : a guide to alternative sampling techniques for National Transit Database reporting |
|---|---|
| Record ID | 26578 |
| Personal Name Creator |
Chu, Xuehao |
| Source | 25p. in various pagings |
| Corporate Creator | United States. Department of Transportation. Research and Special Programs Administration; Florida. Department of Transportation |
| Publisher | National Center for Transit Research (U.S.) |
| Publication Date | 20040500 |
| Language | English |
| Abstract | For estimating the system total unlinked passenger trips and passenger miles of a fixed-route bus system for the National Transit Database (NTD), the FTA approved sampling plans may either over-sample or do not yield FTA’s required confidence and precision levels for the specific conditions of a transit agency. This guide helps transit agencies avoid these problems by developing their own sampling plans for fixed-route bus services. Detailed steps are provided to calculate the statistical variation in passenger miles and unlinked passenger trips and the correlation between them. The sampling plans that transit agencies develop using this guide maintain the main features of the original FTA plans. More important, transit agencies can easily use this guide to develop their own sampling plans in an Excel environment using three existing pieces of information: an NTD sample that they have collected with their current FTA approved sampling plan, their annual days of service, and daily total number of oneway bus trips. This guide complements FTA Circular C2710.1A in that transit agencies first select one of their own sampling plans that best meets their staffing needs, and then follow the procedures in the Circular on sampling and collecting field data. |
| Rosap ID | dot:5569 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/5569 |
| TRT Terms | Data collection; Data processing operations; Data logging; Bus routes; Statistical sampling |
| Classification | NTL - PUBLIC TRANSPORTATION - PUBLIC TRANSPORTATION; NTL - PUBLIC TRANSPORTATION - Transit Planning and Policy; NTL - REFERENCES AND DIRECTORIES - Statistics |
| Geographical Coverage |
United States |
| OCLC | 55941973 |
| Contract Number | DTRS98 -G-0032 |
| Report Number | NCTR-527-05, BC137-46 |
| Resource type | Manual |
| URL | https://ntlrepository.blob.core.windows.net/lib/26000/26500/26578/527-05.pdf |
| Format | |
| Database | NTL Digital Repository |