Roughness of the Asphalt Mix: Its Causes, Effects and Methods to Treat It

This research aims at investigating roughness in asphalt mix, and to address its effects, causes and methods for treating it to provide safe and smooth driving for the drivers and to the roads users in order to reduce accidents, loss of properties and consumption of fuel which reflects on saving financial costs. The research has depended on qualitative research method through reviewing a number of previous studies related to road constructions, since the desired high quality of roads has become priority to the road users and to the environmentalists who seek to reduce air pollution and emission of harmful gases.

The efficacy of road safety education to prevent pedestrian fatalities in Limpopo Province (South Africa)

This paper explores road safety education to prevent pedestrian fatalities in Limpopo Province. Pedestrian safety remains one of the main challenges for road safety authorities as many road users are losing their lives on the road. The inability of both pedestrians and motorists to understand and interpret the rules of the road is a major problem in Limpopo Province. The study utilised quantitative approach. The sample consisted of 195 respondents. Comprises of 15 civil engineering companies, 23 civil society organisations, 52 community members, 51 teachers and 54 traffic police officials. The findings from the study revealed among many others, that 64.1% of respondents agreed that non-involvement of parents in road safety education contribute to pedestrian fatalities; 61% of the respondents agreed that ineffective scholar patrol contribute to pedestrian fatalities; 67.2% of the respondents agreed that lack of professional support in road safety contribute to pedestrian fatalities and 72% of the respondents agreed that limited resources in road safety contribute to pedestrian fatalities. Based on the findings, the author provided, possible recommendations such as; Department of Transport and Education should involve parents/guardians in road safety education; Department of Education should review scholar patrol to ensure that it assist positively in preventing pedestrian fatalities; Traffic authorities should partner with academics to provide road safety policies and strategies; Department of Transport should partner with private sector to provide resources for road safety education in Limpopo Province.

Distributed Edge Computing with Blockchain Technology to Enable Ultra-Reliable Low-Latency V2X Communications

Vehicular communication is a promising technology that has been announced as a main use-case of the fifth-generation cellular system (5G). Vehicle-to-everything (V2X) is the vehicular communication paradigm that enables the communications and interactions between vehicles and other network entities, e.g., road-side units (RSUs). This promising technology faces many challenges related to reliability, availability and security of the exchanged data. To this end, this work aims to solve the scientific problem of building a vehicular network architecture for reliable delivery of correct and uncompromised data within the V2X concept to improve the safety of road users, using blockchain technology and mobile edge computing (MEC). The proposed work provides a formalized mathematical model of the system, taking into account the interconnection of objects and V2X information channels and an energy-efficient offloading algorithm to manage traffic offloading to the MEC server. The main applications of the blockchain and MEC technology in the developed system are discussed. Furthermore, the developed system, with the introduced sub-systems and algorithms, was evaluated over a reliable environment, for different simulation scenarios, and the obtained results are discussed.

Environmentally-friendly electric vehicles: a silent menace to vulnerable road users?

Prediction models have been extensively used in the field of road safety, however, none of these models have been particularly applied to zero-emission electric vehicle (EV) related injuries so far; which may lead to different outcomes due to their inaudible engines. Using an optimizable classification tree, this first-ever study aims to predict the likelihood of personal injury severities stemming from EV-related crashes on Britain's roads. The prediction model was found to be capable of detecting significant and insignificant factors. The factors provide important insights into how the severity of injuries can be reduced in the future deployment of EVs. Although there was an increased risk for injuries classified as ‘slight severity’, particularly at lower urban speed limits, several predictors are suggesting that EVs do not pose more of a risk to a certain group. Contrary to popular belief, no convincing evidence has been found to suggest that eco-friendly EVs are ‘silent killers’ for vulnerable road users.

Compliance and Awareness as Mediation Variables on the Influence of Utility and Trust of Electronic Traffic Law Enforcement on the Traffic Habit

Road safety is the most important and main thing in traffic management. This is the shared responsibility of all elements of the nation, including regulators, law enforcement, road users, and so on. Based on this background, the purpose of this study is to determine and analyze the direct effect of Compliance and Awareness as mediating variables on the Effect of Utility and Trust in Electronic Traffic Law Enforcement on Behavior. The analysis of this research uses a survey method conducted at the intersection of Jalan Merdeka Selatan, Gambir, Central Jakarta. The population in this study were road users, namely four-wheeled drivers who passed the Jalan Merdeka Selatan intersection. The sampling technique used is non-probability sampling. The nine hypotheses gave a decision to reject the null hypothesis which means significant, meaning that each variable has a direct and significant effect on each other, namely: ETLE utility affects Compliance, Awareness, and Habits directly and significantly; ETLE trust directly and significantly influences Compliance, Awareness, and Habits; Compliance directly and significantly affects Consciousness and Habits; Awareness directly and significantly influences Habits. ETLE utility indirectly and significantly affects Compliance, Awareness, and Habits. ETLE trust indirectly and significantly influences Compliance, Awareness, and Habits. Compliance has an indirect and significant effect on Awareness and Habits. Develop a Habits in Traffic model defined by ETLE Utility and Trust mediated by Compliance and Awareness. The authenticity of this study can be seen in the indirect effect where there is still no research with the direction of such relationships and variables.