APPROACH TO ESTIMATING ACCELERATION NOISE BASED ON AVERAGE VEHICLE SPEED
Keywords:
vehicle speed, acceleration noise, standard deviation, exponential model, road network section, signalized intersection.Abstract
The research is aimed to determine the statistical model representing the relationship between the average vehicle speed at road network sections and the acceleration noise, which generalizes the number-of-stops concept and characterizes the level of service for drivers. It is shown that the common regularities in vehicle speed values at a certain road section in a city can be well described using the average speed as the main characteristic deriving the speed distribution parameters. At the same time, modern transport modelling software allows obtaining adequate average speed estimates for road network sections, and it constitutes a good basis for the development of the model reflecting the relationship between acceleration noise and average vehicle speed.
Herewith, to establish the desired model, there is little statistical data because of the difficulties in quantitative estimation of acceleration noise – the estimation requires multiple but not a single observation. To solve this problem, it was assumed that the abovementioned model is the exponential one. The assumption was made based on the information about the behaviour of the acceleration in a signalized environment and does not contradict the results of existing studies.
The parameter of the statistical model was estimated based on the results of the observations over the vehicles being in the queue at the stop line of the signalized intersection and departing when the signal turns green. Under the condition that all vehicles at the queue were stopped and waiting for green to pass through the intersection, there exists an opportunity to measure the values of average speed and acceleration – the vehicles have zero speed at the queue and a certain speed when they are crossing the chosen cross-section before the stop line. The developed measurement methodology allowed obtaining average acceleration of each vehicle departing from the queue and acceleration standard deviation, which is an estimate of acceleration noise.
References
Mary C. Meyer Probability and Mathematical Statistics: Theory, Applications, and Practice in R. SIAM. Society for Industrial and Applied Mathematics, 2019. 707 p. ISBN: 1611975778
Babu, Y.S. Acceleration Noise and Level of Service of Urban Roads – A Case Study / Babu Y.S., Pattnaik S.B. // Journal of Advanced Transportation, № 31(3), 2010, pp. 325–342. https://doi.org/10.1002/atr.5670310307
Горбачёв, П. Ф. Влияние ширины проезжей части на скорость движения автомобилей в город-ских условиях / Горбачёв П. Ф., Макаричев А. В., Горбачёва Е. А., Ву Д. М. // Автомобильный транспорт / Cб. науч. тр. Вып. 44. – Харьков : ХНАДУ, 2019. – С. 50-58. https://doi.org/10.20998/2522-9052.2020.2.24
Макаричев, А. В. Распределение скорости движения автомобилей перед стоп-линией городско-го регулируемого перекрёстка / Макаричев А.В., Горбачёв П.Ф., Ву Д. М., Горбачёва Е.А. // Вестник Харь-ковского национального автомобильно-дорожного университета / Cб. науч. тр. Вып. 85. – Харьков : ХНАДУ, 2019. С. 107–116. https://doi.org/10.30977/BUL.2219-5548.2019.85.0.1072
Dhamaniya, A. Speed Characteristics of Mixed Traffic Flow on Urban Arterials / Dhamaniya A., Chandra S. // International Journal of Civil, Environmental, Structural, Construction and Architectural Engineering. 2013. № 7(11). P. 883–888. DOI: https://doi.org/10.5281/zenodo.1089419
Rao, A.M. Free Speed Modeling for Urban Arterials – A Case Study on Delhi / Rao A.M., Rao K.R. // Periodica Polytechnica Transportation Engineering. № 43(3). 2015. P. 111–119. DOI: https://doi.org/10.3311/PPtr.7599
Horbachov, P. Framework for designing sample travel surveys for transport demand modelling in cit-ies / Horbachov P., Makarichev O., Svichynskyi S., Ivanov I. Transportation, 2021. DOI: https://doi.org/10.1007/s11116-021-10168-6
Horbachov, P. Theoretical substantiation of trip length distribution for home-based work trips in urban transit systems / Horbachov, P., Svichynskyi, S. // The J. of Trans. and Land Use, № 11 (1), 2018. P. 593–632. DOI: https://doi.org/10.5198/jtlu.2018.916
Капский, Д.В. Разработка модели транспортных потоков на улично-дорожной сети города / Капский Д.В., Навой Д.В., Пегин П.А. // Наука и техника. № 18(1). – Минск : БНТУ, 2019. С. 47–54. https://doi.org/10.21122/2227-1031-2019-18-1-47-54
Ugirumurera, J. A unified software framework for solving traffic assignment problems / Ugirumurera J., Gomesy G., Xiaoye S.L., Bayen A. // CoRR, 2018. URL: https://arxiv.org/abs/1804.11026
Gartner, N. Acceleration Noise as a Measure of Effectiveness in the Operation of Traffic Control Systems : working paper // Chung C.C., Gartner N. / Cambridge: Operations Research Center, Massachusetts Institute of Technology, 1973. 41 p.
A Policy on Geometric Design of Highways and Streets : Washington DC: American Association of State Highway and Transportation Officials, 2004. 82 p.
Yang, G. Acceleration Characteristics at Metered On-Ramps / Yang G., Xu H., Tian Z., Wang Z., Zhao Y. // Transportation Research Record. № 2484(1). 2015. P. 1-9. https://doi.org/10.3141/2484-01
