| Title | Transit Reliability Information Program (TRIP): Approach to K-Factor Development |
|---|---|
| Record ID | 68754 |
| Corporate Creator | Dynamics Research Corporation |
| Corporate Contributor |
Transportation Systems Center |
| Publisher | Dynamics Research Corporation |
| Publication Date | 19811113 |
| Language | English |
| Abstract | By definition, 11K-factors11 are conversion factors used in the computation, analysis and interpretation of transit operations and maintenance data in order to normalize this data over various properties and vehicle types. For example, if one property has a station spacing of 9 stations per mile with four doors per side on a vehicle, and another property has a station spacing of 2 stations per mile with three doors per side on a vehicle, failure rates for the door system of 36 failures per 1,000 miles and 6 failures per 1,000 miles, respectively could be interpreted as equivalent failure rates given that all other factors such as the ambient environment are equal. In terms of TRIP, K-factors are multipliers that will be applied to the "dynamic" data in order to account for differences in the following four categories: equipment design, configuration, operation, and operating environment. Dynamic data consist of information covering the utilization and maintenance of transit vehicles and equipment. This data provides the basis for determining revenue service reliability which is reported in various forms in the output reports currently generated by TRIP. Not only is the dynamic data essential in the development of K-factors, but, the "reference" datal collected and stored by TRIP will be used in the computation of K-factors. This reference data is information which describes the configuration, characteristics, and operation of a transit system, vehicle type, or equipment on a vehicle type. Currently, such reference information is used to initialize the Data Bank to accept data from a source, and indirectly and externally used to interpret the output reports currently generated by TRIP. |
| Rosap ID | dot:55747 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/55747 |
| TRT Terms | Transit vehicle operations; Maintenance; Reliability; Data banks; Systems analysis |
| Geographical Coverage |
United States |
| TRIS Online Accession No |
1775920 |
| Contract Number | DTRS-57-81-C-00084 |
| Report Number | E-6084U |
| Availability | Volpe National Transportation Systems Center, Technical Reference Center |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/68000/68700/68754/TRIP_Approach_to_K-Factor_Development.pdf |
| Format | |
| Database | NTL Digital Repository |