THE PASSENGER FLOW RANGES OF EXCEPTIONAL AND ALTERNATIVE APPLICATION OF DIFFERENT VEHICLES CAPACITY CLASSES
Abstract
Operating on the transit routes primarily involves the choice of the vehicles from a certain capacity class and estimation of their required number. Decisions taken at this stage determine the headway duration and frequency, level of the vehicle occupancy, fail-to-board probability, etc. According to these tasks, information on passenger flows, which is the actual representation of demand for transportation services, is high importance. A fixed passenger flow quantity related to the rational areas of application of vehicle capacity.
The article is devoted to the decision of tasks of definition of rational areas of using of different classes capacity buses for city passenger transportation. The research was based on the assumption that there are ranges of passenger flow on the most loaded section of the route, in which it is expedient to use only of a certain class capacity vehicles (exceptional ranges) and ranges for which the choice of vehicles capacity from several alternative capacity classes (alternative ranges). To determine such ranges we came from restrictions on the passenger capacity of vehicles, headway duration and the number of standing passengers per square meter (passenger standing density) limitation. We proceeded from the following numerical values: the minimum headway - 2 minutes; maximum headway - 12 minutes; the duration of the calculation period is 1 hour; the minimum bus capacity - 9 passenger; maximum bus capacity is 200 passenger. The load factor on the most loaded section of the route was considered at levels of passenger standing density 3, 5 and 8 passengers per square meter. It is established that exceptional passenger flow ranges exist for buses of small and large capacity classes. It has been discovered that the limits of both exclusive and alternative ranges vary depending on the accepted limitations on the degree of number of standing passengers per square meter limitation. The direction of further research is to determine the rational areas of using of buses of different capacity classes for alternative passenger flow ranges and to disseminate the results to other types of urban passenger modes, in particular to urban electricity transport.
Keywords: urban passenger transportation, passenger flow, bus capacity, load factor, headway.
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