What contributes to mechanical collision causes?

The selected answer points to the specific contribution of mechanical failure to collisions. While all the other choices indicate factors that can lead to collisions, option B explicitly quantifies mechanical failure as a minimal factor in accidents, estimating it to cause about one half to one percent of all collisions. This statistic highlights that while mechanical issues do play a role, they are comparatively rare when looked at on a larger scale of overall accident causes.

Driver distractions, high-speed driving, and ignoring traffic signals are all common behavioral and environmental causes of collisions that reflect the actions of drivers rather than mechanical failures. Therefore, they do not convey the same context as the statistical distribution of mechanical causes of collisions. Understanding this distinction is crucial for learning about traffic safety and accident prevention, as it assists in highlighting which factors are most critical to address in driver safety programs and mechanical inspections.