Firdausi MFA, Rosnawati E. Enforcement of Law Number 22 of 2009 concerning Road Traffic on Vehicle Speed ​​Limits on Toll Roads. IJPPR [Internet]. 2020Jul.31 [cited 2024Apr.29];110:10.21070/ijppr.v11i0.1164. Available from: https://ijppr.umsida.ac.id/index.php/ijppr/article/view/1164