Frequency-based Vehicle Idling Detection. International Journal of Automation and Smart Technology, [S. l.], v. 4, n. 1, p. 55–61, 2014. DOI: 10.5875/ausmt.v4i1.399. Disponível em: https://www.jausmt.org/index.php/jausmt/article/view/338.. Acesso em: 1 may. 2026.