“…Evidence from earlier research (Celik and Oktay, 2014;Kim et al, 2008) revealed that road traffic accidents occurred during the evening peak were more likely to result in less severe injuries, while other studies (Abegaz et al, 2014;Chung et al, 2014;Uçar and Tatlıdil, 2007) showed the impact of driving at night on injury severities. Other past research (Chu, 2015;Khorashadi et al, 2005;Yau, 2004;Yau et al, 2006) also studied the impact of various time periods on injury severity levels. On the other hand, some earlier studies indicated that accidents occurred on either weekdays (Carson and Mannering, 2001;Rifaat et al, 2011) or weekends (Martensen and Dupont, 2013;Yau, 2004;Zhang et al, 2013) might significantly affect injury severity levels.…”