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Article

ANALYSIS OF SPEED ON RURAL STATE ROADS – VALLEY ROUTES

DOI: 10.7708/ijtte.2020.10(1).10


10 / 1 / 111-125 Pages

Author(s)

Vladan Tubić - University of Belgrade, Faculty of Transport and Traffic Engineering, Vojvode Stepe 305, 11000 Belgrade, Serbia -

Dragana Božić - University of Belgrade, Faculty of Transport and Traffic Engineering, Vojvode Stepe 305, 11000 Belgrade, Serbia -

Nemanja Stepanović - University of Belgrade, Faculty of Transport and Traffic Engineering, Vojvode Stepe 305, 11000 Belgrade, Serbia -


Abstract

Speed, as one of the basic parameters of the traffic flow, has a great importance in terms of efficiency (level of service, travel time) and safety (number of traffic accidents, consequences and risk of accident occurrence). Speed management includes a series of measures that are applied in order to achieve the balance between safety and efficiency in the traffic flow. One of the most important measures for achieving this goal is to define a credible speed limit, i.e. the speed limit that would allow maximization of the capacity and level of service of the observed section, or minimization of users' costs and the risk of traffic accident occurrence. Considering the fact that improper and unadjusted speed causes a number of significant negative effects, the aim of this paper is to carry out the analysis of the credibility of the existing speed limits, i.e. to determine the factors that impact the speed on two-lane sections of valley roads. In order to achieve this, field research in real-world conditions was carried out using the mobile observation method and an Android phone application. This paper analyzed the speed on the cross-section (time-mean speed). However, it also analyzed the traffic flow speeds on the entire homogeneous impact segment on the basis of automated traffic counters (micro level), as well as on the macro level, i.e. along the six analyzed sections of two-lane rural valley roads (space-mean speed). Also, empirical research determined the speed limit values on the selected sections and free flow speeds on the basis of the Linear Model and by applying the HCS software. Within the speed analysis, the values of operating speeds were determined based on analytical models and methods. In order to obtain a clearer image of the credibility of the existing speed limits, an analysis of the speed limit violations according to classes was carried out.


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Acknowledgements:

This paper was supported by the project of the Ministry of Education, Science and Technological Development of the Republic of Serbia (No. 36027).


References:

Aarts, L.; Van Schagen, I. 2006. Driving speed and the risk of road crashes: A review, Accident Analysis & Prevention 38(2): 215-224.

 

BRAKE (Brake Road Safety Charity). 2004. The Green Flag Report on Safe Driving 2004 Part two: Speed. Available from internet: https://www.brake.org.uk/assets/docs/dl_reports/gf2_speed.pdf.

 

Elliott, M.A.; McColl, V.A.; Kennedy, J.V. 2003. Road design measures to reduce drivers' speed via psychological processes: a literature review. TRL. 34 p.

 

ERSO (European Road Safety Observatory). 2015. Speed and Speed Management. Available from internet: https://ec.europa.eu/transport/road_safety/sites/roadsafety/files/ersosynthesis2015-speedspeedmanagement25_en.pdf.

 

Fildes, B.N.; Lee, S.J.; 1993. The speed review: road environment, behaviour, speed limits, enforcement and crashes. Report CR127. Federal Office of Road Safety, Department of Transport and Communications, Canberra, Australia.

 

Gardner, D.J.; Rockwell, T.H. 1983. Two views of motorist behavior in rural freeway construction and maintenance zones: the driver and the state highway patrolman, Human Factors 25(4): 415-424.

 

Goldenbeld, C.; van Schagen, I. 2007. The credibility of speed limits on 80 km/h rural roads: The effects of road and person (ality) characteristics, Accident Analysis & Prevention 39(6): 1121-1130.

 

HCM (Highway Capacity Manual). 2000. Highway Capacity Manual, Transportation Research Board, Washington D.C., Available from internet: https://sjnavarro.files.wordpress.com/2008/08/highway_capacital_manual.pdf.

 

Kajalić, J.; Čelar, N.; Stanković, S. 2018. Travel Time Estimation on Urban Street Segment, Promet-Traffic&Transportation 30(1): 115-120.

 

Kloeden, C.N.; Ponte, G.; McLean, J. 2001. Travelling speed and risk of crash involvement on rural roads. Australian Transport Safety Bureau.

 

Kuzović, Lj. 1994. Evaluation of the road network development management [In Serbian: Vrednovanje u upravljanju razvojem i eksploatacijom putne mreže]. University of Belgrade – Faculty of Transport and Traffic Engineering, Belgrade, Serbia, 56 p.

 

LDfT (London Department for Transport). 2010. Understanding Public Attitudes to Road user Safety – Literature Review: Final Report, Road Safety Research Report No. 112. Available from Internet: https://uwe-repository.worktribe.com/output/975717/understanding-public-attitudes-to-road-user-safety-literature-review-final-report-road-safety-research-report-no-112.

 

Martens, M.H.; Compte, S.; Kaptein, N.A. 1997. The effects of road design on speed behaviour: a literature review. Deliverable D1. TNO-report TM-97-B021. Soesterberg: TNO.

 

Montella, A.; Imbriani, L.L. 2015. Safety performance functions incorporating design consistency variables, Accident Analysis & Prevention 74: 133-144.

 

OECD (Organisation for Economic Co-operation and Development) and ECMT (European Conference of Ministers of Transport). 2006. Speed management, Paris, France. Available from internet: https://www.itf-oecd.org/sites/default/files/docs/06speed.pdf.

 

Solomon, D.H. 1964. Accidents on Main Rural Highways: Related to Speed, Driver, and Vehicle. US Department of Transportation, Federal Highway Administration.

 

SWOV. 2012. Speed choice: the influence of man, vehicle, and road, Leidschendam, Netherlands. Available from internet: https://www.swov.nl/sites/default/files/publicaties/gearchiveerde-factsheet/uk/fs_speed_choice_archived.pdf.

 

Van Schagen, I.N.; Wegman, F.; Roszbach, R. 2004. Safe and credible speed limits: a strategic exploration. R2004-12. Leidschendam: SWOV Institute for Road Safety Research.

 

Wilmot, C.G.; Khanal, M. 1999. Effect of speed limits on speed and safety: a review, Transport Reviews 19(4): 315-329.

 

Yu, R.; Abdel-Aty, M. 2014a. Analyzing crash injury severity for a mountainous freeway incorporating real-time traffic and weather data, Safety science 63: 50-56.

 

Yu, R.; Abdel-Aty, M. 2014b. An optimal variable speed limits system to ameliorate traffic safety risk, Transportation research part C: emerging technologies 46: 235-246.


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