What factors can lead to traffic fatalities?

Traffic fatalities can result from a variety of dangerous behaviors on the road. Speeding is a significant factor, as it reduces the driver's ability to react to sudden obstacles or changes in the road environment. Higher speeds increase the force of a collision, making crashes more likely to be fatal.

Driving under the influence of alcohol or drugs impairs a driver's judgment, coordination, and reaction times. This impairment can lead to poor decision-making and increased likelihood of accidents, resulting in severe or fatal outcomes.

Driving without a seatbelt greatly increases the risk of serious injury or death in the event of a crash. Seatbelts are designed to keep occupants secure within the vehicle, minimizing the likelihood of being ejected during an accident, which is often fatal.

Since all these factors contribute significantly to traffic fatalities, the most comprehensive answer encompasses all of them, reflecting the complex nature of road safety and the multiple threats that drivers face.