Research Article Models of Analysis of Credible Deviation from Speed Limits on Two-Lane Roads of Bosnia and Herzegovina Marko Suboti´ c, 1 Nemanja Stepanovi´ c, 2 Vladan Tubi´ c, 2 Edis Softi´ c, 3 and Mouhamed Bayane Bouraima 4 1 Faculty of Transport and Traffic Engineering Doboj, University of East Sarajevo, Vojvode Miˇ si´ ca 52, Bosnia and Herzegovina 2 Faculty of Transport and Traffic Engineering Belgrade, University of Belgrade, Vojvode Stepe 305, Belgrade, Serbia 3 Technical Faculty Biha´ c, University of Biha´ c, Irfana Ljubijanki´ ca Bb, Biha´ c, Bosnia and Herzegovina 4 Organization of African Academic Doctors (OAAD), Off Kamiti Road, P. O. Box 25305-00100, Nairobi, Kenya Correspondence should be addressed to Mouhamed Bayane Bouraima; mouba121286@yahoo.fr Received 6 July 2022; Revised 9 September 2022; Accepted 23 September 2022; Published 7 October 2022 Academic Editor: Dan Selis ¸teanu Copyright©2022MarkoSuboti´ cetal.isisanopenaccessarticledistributedundertheCreativeCommonsAttributionLicense, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Any deviation of speed in a traffic flow from a speed limit represents a potential risk of traffic accidents, so speed management appears as an imperative. However, an inadequately set speed limit often causes drivers’ noncompliance to it in the conditions of real traffic flow. By determining the value of exceeding the speed limit according to vehicle classes, it is possible to recommend a credible speeding value that can be considered credible up to a value above the speed limit. In this paper, deterministic multistep mathematical models of speed deviation from the speed limit as a function of longitudinal gradient for the proposed vehicle classes were developed. A total of 11 measuring sections with different traffic flow types were analyzed. Based on a detailed analysis of speeding, models for the deviation of the 15th, 50th, and 85th percentiles were obtained, with the aim of adjusting the credible deviation to control measures. e results obtained in this study were compared with a survey of traffic flow speeding on two-lane roads conducted in Serbia. 1. Introduction Roads represent significant resources and the most im- portant public investments of a country, with significant funds allocated for the construction and maintenance with two fundamental tasks, to be efficient and to be safe. In real traffic flow, almost all functional dependencies are based on the relationship between flow, speed, density, number of traffic accidents, etc. as traffic parameters, and longitudinal gradient, road condition, minimum radius of horizontal curvature, etc. as road characteristics. Special attention in the analysis of the functional dependence of traffic and road parameters is expressed for two-lane roads since a large percentage of these roads make up the largest part of the road network of a country. By analyzing traffic parameters, it is evident that the speed of traffic flow is one of the main parameters, and, at the same time, a main indicator for sizing and functional and economic evaluation of project solutions. Any speeding in a traffic management system implies the application of an adequate speed management policy in order to ensure a harmonized traffic flow. Deviation from a speed limit is mainly connected with the increased probability of traffic accidents. Additionally, determining a credible deviation from a speed limit of a real traffic flow is an imperative in the analysis of speeding, and thus reducing a potential occurrence of incidents. Com- monly, the number of traffic accidents and the increase in risk are related to operating speeds. Operating speeds have been shown to be higher than design speeds for a speed limit of about 55 mph or less. erefore, it is very important to analyze speed through five specific indicators of the de- pendence of speed on the geometric characteristics of the road. ese are relationships between road geometry and operating speeds, influence of road geometry on operating Hindawi Complexity Volume 2022, Article ID 2832175, 13 pages https://doi.org/10.1155/2022/2832175