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The potential for an intelligent transportation system (ITS) has been made possible by the growth of the Internet of things (IoT) and artificial intelligence (AI), resulting in the integration of IoT and ITS—known as the Internet of vehicles (IoV). To achieve the goal of automatic driving and efficient mobility, IoV is now combined with modern communication technologies (such as 5G) to achieve intelligent connected vehicles (ICVs). However, IoV is challenged with security risks in the following five (5) domains: ICV security, intelligent device security, service platform security, V2X communication security, and data security. Numerous AI models have been developed to mitigate the impact of intrusion threats on ICVs. On the other hand, the rise in explainable AI (XAI) results from the requirement to inject confidence, transparency, and repeatability into the development of AI for the security of ICV and to provide a safe ITS. As a result, the scope of this review covered the XAI models used in ICV intrusion detection systems (IDSs), their taxonomies, and outstanding research problems. The results of the study show that XAI though in its infancy of application to ICV, is a promising research direction in the quest for improving the network efficiency of ICVs. The paper further reveals that XAI increased transparency will foster its acceptability in the automobile industry. [ABSTRACT FROM AUTHOR]

Stakeholders play a crucial role in ensuring the smooth design and implementation of policies worldwide. This research presents the results of three focus groups carried out with stakeholders from different transport ministries and agencies involved in road safety in Nigeria. It aimed to understand their perception of road safety in Nigeria through discussing the road safety situation, measures, and strategies for improvement. Results showed that poor road design, organisation and implementation of road safety legislation, road user behaviour and inadequate research were impeding the improvement of road safety in Nigeria. Amongst the road safety measures discussed, public education and information campaigns were rated by each stakeholder group as very effective and easy to implement despite this not being supported by the wider literature. However, there were some variations in perception regarding the effectiveness of measures such as traffic control, road design and maintenance. Improving the road safety situation in Nigeria would require more concerted effort and an overall system-based policy reform involving both government and road users. The results of this study will contribute to and provide research evidence-based recommendations needed to design and develop integrated road safety policies and sustainable implementation strategies in Nigeria and other developing countries. [ABSTRACT FROM AUTHOR]