Motorists travelling during the early hours of the morning face a significantly higher risk of being involved in road collisions, with new research identifying 3am as the most dangerous time to drive on South Africa’s roads.
The findings come from a report released by fleet safety and driver behaviour specialist Optix Intelligence, which analysed more than 12 months of driving data collected between May 2025 and April 2026.
Using information from over 8.9 million driver-hours and 16.1 million recorded driving events, the company measured collisions per 1,000 active drivers rather than relying on traffic volumes. The approach provides a clearer picture of the likelihood that an individual driver will be involved in a crash.
The results showed that road safety varies considerably throughout the day. Around 10am, collision rates were at their lowest, averaging 0.66 incidents per 1,000 drivers. From late afternoon onward, however, the risk gradually increased before rising sharply after midnight.
By 3am, the collision rate reached 1.37 incidents per 1,000 drivers—almost double the daytime average. The period between 11pm and 1am also recorded significantly elevated crash rates, confirming that overnight travel remains one of the highest-risk periods for motorists.
According to Optix, the pattern mirrors national road safety statistics published by the Road Traffic Management Corporation (RTMC), which consistently show that a large proportion of fatal crashes occur during the night.
H3 Why drivers are more vulnerable after midnight
Researchers said the increased danger is closely linked to the body’s natural circadian rhythm. Between approximately 2am and 6am, alertness, reaction times and decision-making abilities naturally decline as the body enters its lowest biological performance period.
During these hours, drivers become slower to identify hazards and less capable of responding quickly to unexpected situations, increasing the likelihood of serious collisions.
Fatigue is often compounded by reduced visibility, particularly on long-distance journeys where drivers may already have spent several hours behind the wheel.
H3 South Africa’s roads add to the danger
While biological factors play a major role, the report found that South Africa’s road environment significantly increases the risks associated with night-time driving.
Many regional and rural roads lack street lighting, forcing motorists to rely solely on vehicle headlights, which typically illuminate only 60 to 120 metres ahead. At highway speeds, that provides very limited reaction time.
The study also identified potholes, faded lane markings, missing reflective road studs and damaged or stolen road signs as common hazards that become much harder to detect after dark.
Livestock and wildlife remain a serious concern along major routes including the N1, N3, N7, N11 and N12, while pedestrians walking alongside roads or crossing outside designated crossings continue to contribute to high fatality rates.
Additional risks include broken-down vehicles, trucks parked on road shoulders and unmarked roadside obstructions.
Supporting these findings, a 2025 study based on Western Cape Emergency Medical Services data found that more than half of all road traffic deaths occurred at night. Separate RTMC festive season statistics also showed that pedestrians accounted for 41% of road fatalities during periods of increased overnight travel.
The report suggests that motorists can reduce their personal risk by planning journeys to avoid the early morning hours whenever possible, particularly between midnight and dawn.
Source: BusinessTech / Optix Intelligence