Using cellphones while driving poses a significant risk to road users and increases the probability of having crashes. Many countries have imposed a ban on cellphones use while driving to enhance road safety by reducing drivers’ distractions. However, the cellphone use while driving ban effectiveness relies mostly on the enforcement level. Using a collected questionnaire survey data, a random parameters binary logit approach with heterogeneity in means was employed to assess the effectiveness of smart detection cameras on restricting cellphone use while driving in Saudi Arabia. A wide range of variables were discovered to have an impact on the concealing phone use when approaching detection cameras’ locations. The findings show a necessity of road safety awareness and education programs to highlight the posed risk of using handheld devices while driving. In addition, the findings show drivers could adopt enforcement avoidance behaviors which jeopardizes the effectiveness of using smart detection cameras to ban cellphone use while driving. Policy makers could use the findings to enhance the enforcement which reduces risky driving behaviors leading to safer roads and sustainable transport system.