Optimization of Dikmas Lantas by Kamsel Unit in the Framework of Suppressing Traffic Violations of Riding Motorcycles Without Wearing a Helmet at Polresta Magelang. APSRJ [Internet]. 2024 Sep. 13 [cited 2026 Oct. 24];4(5). Available from: https://journal.akpol.ac.id/index.php/apsrj/article/view/982