“ Integrated Application System for Reporting Emergency Situations on Toll Roads Based on NodeMCU”. Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik 20, no. 2 (December 30, 2021): 114–124. Accessed February 3, 2026. https://jurnalteknik.unjani.ac.id/jt/article/view/399.