Abstract
The peculiarities of organization and perspectives of mass passenger transportation in the city and beyond are considered with the use of "Bus Rapid Transport" (BRT) or Metrobus. Different aspects of study of motor vehicles (MV) controllability and stability are analyzed. It is substantiated that it is sufficient to consider the potential stability of the MV itself, in order to guarantee the stability of the "driver MV" system with a large reserve. A mathematical model of a three-axle bus train consisting of a bus and two trains (metrobus) is developed and the factors influencing the critical speed as the main index of the stability of its movement are determined. It is established that the increase of the critical speed of the metrobus can be achieved by increasing the base of the bus, the first and the second trailer, as well as the mass of the bus and the coefficients of resistance of the drive wheels of the bus driving axle and the trailers axles. At the same time, increasing the distance from the mass center to the bus rear axle, increasing the distance from the mass center to the point of the coupling of the bus with the first trailer, increasing the mass of trailers and the resistance of the resistance of the wheel drive of the bus axis lead to a decrease in the critical speed of the metrobus. This must be taken into account both when designing metrobuses, and when operating them.
Highlights
Metrobus or "Bus Rapid Transport" (BRT) is the name of a rather complex system of bus traffic [1]
The model complies with Euro-6 standards. It was presented at the Busworld Latin America international exhibition in Medellin, Colombia
The BRT system has a number of undeniable benefits: - High passenger capacity and efficient payment systems provide low-cost travel. - High speed of movement allows the metrobus to transport a significant share of passenger traffic, which contributes to reducing the number of motor transport on the city roads and, reducing emissions of waste gases. - An expanded information system informs passengers about the schedules of the routes
Summary
Metrobus or "Bus Rapid Transport" (BRT) is the name of a rather complex system of bus traffic [1]. One double-articulated road train transports up to 200 passengers. This vehicle is designed for the assigned lane of high-speed bus service BRT, which has been operating successfully in some of the largest cities in the world, including Istanbul. - High speed of movement allows the metrobus to transport a significant share of passenger traffic, which contributes to reducing the number of motor transport on the city roads and, reducing emissions of waste gases. Metrobuses operate in several countries: USA, Brazil, Venezuela, Colombia, Guatemala, Canada, Mexico, Australia, New Zealand, Japan, Iran, Turkey, France, Czech Republic, etc This list is quickly updated, as more cities are taking decisions in favor of the BRT system. It is shown that the overall lane of such a train with a total length of 25 m is about 10 m, that is, in order to move, such train needs its own fenced lane, on which the metrobus can move with the maximum speed provided with both the traction capabilities of the leading link and the stability of the movement
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