Defensive driving is a set of driving practices that help drivers anticipate hazards and other road users' mistakes, so they can avoid crashes regardless of conditions or the actions of others.

Defensive driving is a way of driving that anticipates hazards and other drivers' errors, so the driver has the time and space to avoid a crash.
A defensive driver does not assume other people will follow the rules. They watch for the car that runs a red light, the pedestrian who steps out, or the truck that drifts into their lane. They manage speed and following distance so they can stop or steer away in time. The goal is simple: avoid crashes, even when someone else makes the mistake.
Motor vehicle crashes are a leading cause of work-related deaths. Defensive driving applies to anyone who drives for work, from long-haul truck drivers and delivery drivers to sales staff, field technicians, healthcare workers and field crews whose trips to remote sites fall under journey management. It is a core element of most fleet safety programs.
There is no OSHA standard that specifically requires defensive driving training. OSHA, the National Highway Traffic Safety Administration (NHTSA) and the Network of Employers for Traffic Safety (NETS) jointly published the "Guidelines for Employers to Reduce Motor Vehicle Crashes." The guidelines recommend driver selection, training, policies on seat belts and distraction, vehicle maintenance and crash reporting.
ANSI/ASSP Z15.1 is a voluntary national standard for safe practices in motor vehicle operations. It gives organizations a framework for a fleet safety program, including management leadership, driver qualification, driver training, vehicle maintenance and incident reporting. Check the current edition for specific requirements.
The FMCSA Entry-Level Driver Training (ELDT) rule, in 49 CFR Part 380, Subparts F and G, has applied to new commercial driver's license applicants since February 7, 2022. New drivers must complete theory and behind-the-wheel training from a registered provider before taking certain CDL skills tests. The training curriculum covers safe driving skills such as space management, speed management and hazard perception.
The National Safety Council offers defensive driving courses for employers and individuals. Many insurers and fleet safety vendors also offer courses, sometimes combined with in-vehicle coaching.
A regional HVAC service company had several rear-end crashes in one year, all involving technicians driving vans in city traffic. Telematics data showed frequent harsh braking and following distances under 2 seconds. In one crash, a technician looked down at a work order on his phone and hit a car that had stopped for a pedestrian.
The company enrolled all technicians in a defensive driving course and set a policy of at least a 3-second following distance and no phone use while driving. Supervisors received weekly telematics reports and held short coaching talks with drivers who had repeated harsh braking events. Dispatch stopped calling technicians while they were driving. Over the next year, harsh braking events dropped by more than half and the company had no rear-end crashes.
The 3-second rule is a way to measure following distance. Pick a fixed point, and when the vehicle ahead passes it, count the seconds until you reach it. For cars in good conditions you should count at least 3 seconds, and more in bad weather.
No. OSHA has no standard that specifically requires defensive driving training. However, OSHA, NHTSA and NETS recommend driver training in their employer guidelines, and many insurers and customers expect it.
CDL manuals advise at least one second for every 10 feet of vehicle length, plus one more second at speeds above 40 mph. A 70-foot tractor-trailer at highway speed would need at least 8 seconds. Drivers should add more time in poor conditions.
Key techniques include scanning 12 to 15 seconds ahead, keeping a space cushion, managing speed, wearing seat belts, and avoiding distraction and fatigue. Defensive drivers also adjust for weather and always plan an escape route.
Part of SafetyIQ's EHS glossary: plain-English definitions of workplace health and safety terms.
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