For employers who are big enough maybe. A big percentage of freight though is handled by small employers and owner operators. If a particular unsafe practice p

For employers who are big enough maybe. A big percentage of freight though is handled by small employers and owner operators. If a particular unsafe practice produces an extra $1 million dollar accident every 200k hours of driving time, a small one man operation isn’t likely to see that happen over the course of a career. And even if they do, they may not have enough data to notice the correlation. A company with 1000 drivers will likely deal with it once per month.