Kusnandar, Erwin. “PENGARUH PROPORSI SEPEDA MOTOR TERHADAP KECEPATAN ARUS LALU LINTAS”. Jurnal Jalan Jembatan, vol. 27, no. 1, Oct. 2018, p. 8, https://binamarga.pu.go.id/jurnal/index.php/jurnaljalanjembatan/article/view/250.