This study examined the influence of substance abuse and personality factors on
aggressive behaviour among Okada riders in Otukpo Local Government Area with
Tthree hypotheses. A quantitative study using a cross-sectional survey design was
conducted on 130 participants aged 16–35 years. Data were collected through a self-
administered questionnaire using the Aggressive Driving Behavior Scale, Drug Abuse
Screening Test, and Big Five Personality Traits Inventory. Statistical analysis was performed
using regression analysis. Results revealed that substance abuse significantly influenced
aggressive behaviour among Okada riders. Personality factors also had a significant impact on
aggressive behavior. Additionally, there was a significant joint influence of substance use and
personality factors on aggressive behavior among Okada riders in Otukpo Local Government
Area. In conclusion, substance abuse and personality traits play a crucial role in aggressive
behaviour among Okada riders. Therefore, the study recommends that the Federal Road
Safety Corps and related organizations in Nigeria implement psychological intervention
programs and regular enlightenment seminars, particularly targeting individuals with
personality traits linked to aggression. These initiatives could help reduce substance use and,
in turn, aggressive behaviour among Okada riders. The promotion of behavioural intervention
programs, awareness campaigns, and stress management strategies is also recommended to
improve their conduct on the road.

Key words: Substance Abuse, Personality Traits, Aggressive Behaviour, Okada Riders