CAR SPEED DISTRIBUTION IN FRONT OF A STOP-LINE OF URBAN REGULATED INTER-SECTION
Journal Title: Вестник Харьковского национального автомобильно-дорожного университета - Year 2019, Vol 85, Issue
Abstract
Car speed is a very important indicator of the traffic organization level in conditions of the formed street-road network. The car speed in a particular place and at a specific time is definitely random, and therefore should be described by the distribution law. The generally well-known normal distribution of the car speed in free traffic conditions is transformed into another distribution when these conditions complicate. The strictest conditions are those where the car is forced to stop completely and stand for some time in anticipation of permission for fur-ther movement. One such case is regulated intersec-tions, and therefore the establishment of a car speed distribution in these conditions is an urgent task for which a new concept of a car speed should be introduced. Goal. The goal is testing the hypothesis about the possibility of describing the car speed fluctuations in front of the stopline of a regulated intersection by an exponential distribution law. Methodology. Development of the method for the car speed measuring in front of the stopline of the city regulated intersection on the basis of under-standing the speed as the average speed of a car passing distance through the road cross-section. Results. The results of observing the actual speed at a regulated intersection lead to the conclusion that a regulated intersection can significantly compli-cate the traffic conditions in comparison with the narrow passageway and this is reflected in the de-crease of the average speed of vehicles and the growth of its standard deviation, that brings the gamma-distribution close to the exponential form. Originality. A new method of a car speed estimating was proposed, on the basis of which the method was developed and the hypothesis was tested regarding the indicator distribution of the car speed in front of the stop-line of the regulated intersection. Practical value. The obtained result allows to increase accuracy of the car speed prediction in analytical and simulation models of transport network functioning.
Authors and Affiliations
А. Makarychev, P. Horbachov, V. D. Minh, Olena Gorbachova
Keywords
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- EP ID EP649467
- DOI 10.30977/BUL.2219-5548.2019.85.0.107
- Views 116
- Downloads 0
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