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Abstract
This study aims to examine the effect of alertness, attention, reaction time readiness, and safe driving practices on the performance of compressed natural gas (CNG) transport drivers, as well as to examine the role of the Driving Monitoring System (DMS) as a moderating variable. CNG gas transportation involves high operational risks where human factors are one of the main causes of traffic accidents. This study uses a quantitative approach with an explanatory research design. The research population and sample involved all active CNG truck drivers at PT Galang Anugerah Sejahtera, totaling 43 people, using a saturated sampling or census technique. Primary data collection was carried out through distributing questionnaires and subsequently analyzed using the Partial Least Square - Structural Equation Modeling (PLS-SEM) method with SmartPLS 4 software.
The results of hypothesis testing indicate that attention, reaction time readiness, and safe driving practices have a positive and significant effect on driver performance. In contrast, alertness partially does not have a significant effect on driver performance. In the moderating variable test, the results showed that the Driving Monitoring System (DMS) significantly moderated and strengthened the relationship between alertness and driver performance. However, DMS was not proven to moderate the relationship between attention, reaction time readiness, or safe driving practices on driver performance. The managerial implications of this study emphasize the importance of company intervention through distraction management training programs, fatigue management, and optimization of DMS-based evaluations to bridge driver alertness with safety performance in the field.
Keyword: Driver Performance, Alertness, Attention, Reaction Time Readiness, Safe Driving Practices, Driving Monitoring System