This study aims to investigate employee safety behaviour by relating it to safety leadership, safety communication, safety commitment, and safety climate. This research was conducted at PT GMF AeroAsia Tbk in the Cengkareng home base, and multibase areas of Kalimantan, Bali & Nusa Tenggara, Sumatra, Sulawesi & East, and Java. The study began in early September 2019 until the end of March 2020, using a quantitative and explanatory design approach through testing hypotheses to examine the nature of relationships and influences between variables. The population of 2,400 employees with a sample of 342 respondents. The sample distribution uses proportionate cluster random sampling. Model testing and data processing using Structural Equation Modelling (SEM). The data was then analysed using AMOS 22 statistical software. Work accidents at the largest MRO (Maintenance Repair and Overhaul) companies were mainly caused by safety behaviour. Test results from several variables of this study can help the managerial team make an effective approach to improve safety behaviour in the workplace.

This study aims to analyze the queuing system, service performance, and utilization of the two runways at Soekarno-Hatta Airport, Tangerang, Indonesia. The number of aircraft movements at the airport at busy hours exceeds capacity, resulting in long queues. This study uses a quantitative approach and queuing theory with a single server multi-channel queuing system. Discussion of runway service performance at Soekarno-Hatta Airport, by calculating the Queuing System State Probalilities to determine the probability of n units (arrivals) in the system. Five equations have been analyzed in order to Evaluation of the Two Runway Queue System. The findings of this study provide a signal for optimizing airport operator runway utilization by developing runway capacity and adding infrastructure as well as adding taxiways, aprons, and runways. The increase in runway capacity will have an impact on more aircraft services, which also means more effective and efficient runway utilization. To improve the queuing system, it is necessary to improve queuing system services with regular training of directly related officers so that the queuing system can be more effective and efficient. To improve the performance of runway services, it is necessary to increase the capacity of the navigation tools currently owned.

In 2020, a pandemic hit Indonesia, resulting in many Indonesians being exposed to the Covid-19 virus. To reduce and reduce the risk of Covid-19 transmission, the government has imposed a restrictive policy known as the Enforcement of Community Activity Restrictions (PPKM) in all areas of the islands of Java and Bali. The impact of the implementation of this policy is the reduction in the number of passengers per day on all transportation lines. The purpose of this study was to determine the effect of government policies on railway infrastructure, facilities and human resources as well as MRT Jakarta operations which affect the service quality of PT MRT Jakarta. The method used is quantitative by distributing questionnaires to passengers using MRT Jakarta. The results of the study are government policies have a significant influence on infrastructure, facilities, human resources and MRT Jakarta train operations and train operations have a significant influence on PT MRT Jakarta's service quality as much as 84.8%.