PIMENTEL VASCONCELOS, António Luís; MAIA SECO, Álvaro Jorge; CÉSAR BASTOS SILVA, Ana Maria. Comparison of Procedures to Estimate Critical Headways at Roundabouts. Promet - Traffic&Transportation, [S. l.], v. 25, n. 1, p. 43–53, 2013. DOI: 10.7307/ptt.v25i1.1246. Disponível em: https://traffic2.fpz.hr/index.php/PROMTT/article/view/2382. Acesso em: 16 sep. 2025.