![truck_steering_wheel](https://atri-online.org/wp-content/uploads/2012/02/truck_steering_wheel-300x256.jpg)
Furthermore, while historical research legitimately questioned whether “safety culture” could be a confounding variable in previous analyses, this study found no statistically significant difference in overall crash rates between speed-governed fleets and non-governed fleets. Consequently, “safety culture” did not play a role in overall crash reductions when speed limiters are controlled for.