The number of passengers transported per flight on the same route varies by the hour of the day, day of the week, etc. In this case, the vehicle used for transportation, as a rule, is used with a constant (equal) capacity. This leads to the fact that transportation is inefficient. That is, a bus with a capacity of 100 passengers transports, for example, 20 passengers.
Please tell me where I can see the studies that show the efficiency of using the capacity of passenger public transport? Or maybe someone knows where I can get data on the volume of passenger traffic on the route and the capacity of buses?
See the books and papers by Newman and Kenworthy for this data on world cities. For national statistics, see the yearbooks from various countries, and also publications of national transport organisations eg ABARE in Australia, Dept of Transport in the US etc. Most of this is freely available on the web.
You have to also consider the costs associated with adjusting capacity to demand. For example I work for an urban transport provider and we need larger busses for the morning and afternoon commute, but we do not necessarily need them during the times inbetween. Still, we keep the larger busses on route all day long. If we did change the busses after the morning rush-hour and again before the afternoon rush-hour, we'd have higher operating costs. And we would also need more smaller busses, that we cannot utilize during the morning rush-hour.
This study requires a primary data and as such it is specific to the environment to which the study will be carried out. You only need previous studies to guide you on how to go about it. This study though old shows the trip rate that may likely address the issue of volume you spoke about.
1. Siyan, P. & Kwanashie, M. (2006). Impact of Inter-Urban Road Traffic on the Development of the Federal Capital Territory of Nigeria. The Nigerian Journal of Economic and Social Studies, 48(2), 147–163. Ibadan.
Siyan, P. (2006). Inter-Urban Trip Rate of Households and Economic Development in the Federal Capital Territory, Nigeria. The Nigerian Journal of Economic and Social Studies, 48(3), 217.
You may also try UN country by country statistics. It is rigorous, but it's worth giving a trial.
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