Construction occupational accidents are often attributed to workers’ having an insufficient perception of how their actions influence safety in the construction site. This research explores the relationship between safety climate (SC) and personnel safety behavior (SB) of construction workers operating on building construction sites in Taiwan. The study discovered a significant positive relationship between SC and SB of Taiwan’s building construction sites, and in turn SC level had a positive impact on SB participation and overall safety perceptions. The higher the SC cognition of Taiwan’s building construction workers, the better the performance of SB was found to be. The dimension of "safety commitment and safety training" had the greatest relationship with SB. Safety training also had a deep impact on the cognition of SB. Therefore, the organizational culture and attitudes to safety coupled with the successful implementation of safety education and training can effectively enhance SC and worker SB on building construction sites in Taiwan, thereby potentially reducing the impacts of the underlying organizational factors behind safety related incidents.

The construction industry is one of the most dangerous industries in terms of safety performance, with practitioners and experts actively developing various solutions to reduce accident frequency and severity. However, accident information is collected in a wide range of formats by various elements in the construction industry, leading to interoperability issues and poor productivity due to the difficulties of sharing and reusing information. To improve the management of various types of safety management (SM) records in the construction industry, practitioners and researchers have adopted ontological methods. This paper summarizes the SM trends in construction management, along with gaps and opportunities for future work. A data processing framework is developed with a phase research for objective and subjective topic analysis from a collection of articles from 2012–2022 on topics relevant to the use of ontology in SM. The analysis focuses on the ontological life cycle (development, integration, and application), revealing an increasing trend of ontology-based SM (ObSM) research in the SM maintenance phase. Increasing case size and system automation is needed for future ontology-based SM optimization. The findings of the study will help to gain a thorough knowledge of ObSM, which will increase interest in effectiveness and the use of engineering and analytical techniques in SM.

Delays and cost deviations remain common challenges in construction projects, particularly in government-funded projects where administrative and regulatory dynamics can influence implementation. This study aims to evaluate the time and cost performance of the construction of the Social Service Building of East Nusa Tenggara Province using the Earned Value Management (EVM) method integrated with Microsoft Project. The research employed a quantitative descriptive approach based on primary data from weekly progress reports and field observations, as well as secondary data such as the S-curve, Work Plan and Requirements (RKS), and unit price analyses. A total of 1,200 project activities were reconstructed in Microsoft Project to develop detailed scheduling, resource assignments, baseline estimation, and performance tracking. The results indicate that the project experienced significant delays at Week 34, with a Schedule Variance of –54.87% and a Schedule Performance Index of 0.45. However, the project remained under budget, reflected by a Cost Variance of 0.64% and a Cost Performance Index of 1.01. Projection analysis estimates that the project will be completed in Week 76, indicating substantial schedule slippage, although the cost at completion is predicted to remain below the original budget.

Traffic volume that exceeds the existing road capacity occurs on Jalan Piet A. Tallo during peak hours condition. Congestion often occurs in the mornings and evenings. In addition, there is a merging of the 4/2T road segment into 2/2TT which results in a buildup of traffic flow at that point so that some vehicles have to move outside the body of the road. This illustrates that the traffic flow and capacity of this road section are not proportional to the traffic volume at peak hours. Analysis of the capacity and performance of roads is based on the PKJI 2014. The results show that the performance of Jalan Piet A. Tallo Kupang in current conditions is heavily loaded because it exceeds the capacity of the road so that a queue of vehicles moves and stops alternately.