<![CDATA[Occupational Health and Safety (OHS) competence is essential for vocational and polytechnic students in transportation-related fields where workplace hazards are frequent and potentially life-threatening. Conventional teaching methods, such as lectures and traditional practicums, often fail to simulate real-life risks or engage students effectively. This study examines the effectiveness of Augmented Reality (AR)-based practicum in enhancing OHS competence by providing realistic and interactive learning environments without exposing students to actual danger. Using a quantitative experimental design with a pretest–posttest control group, the research involved 55 second-semester students of Politeknik Transportasi Darat Bali. Class A (experimental) received AR-based instruction, while Class B (control) followed conventional training. Data were collected through questionnaires measuring knowledge, attitudes, and self-efficacy, and observation checklists assessing practicum performance. Instrument reliability was confirmed (Cronbach’s alpha = 0.879). Results indicated significant improvements in all five dimensions of OHS competence—safety knowledge, hazard recognition, procedural compliance, situational awareness, and safety communication—with posttest mean scores of 85–95 compared to 45–55 in pretests. Statistical analyses showed significant differences (p < 0.05) and strong effect sizes (Cohen’s d = 0.82–1.03). Student satisfaction exceeded 85% in interactivity, realism, and usability. The findings demonstrate that AR-based practicums enhance learning outcomes, motivation, and digital literacy, making AR a promising pedagogical innovation for transportation polytechnic education.]]>
