A CNN investigation reveals Greyhound has not been enforcing one of its own rules meant to keep passengers safe.

CNN has found that Greyhound, despite saying safety is a priority, does not enforce its own rule related to driver fatigue.
Internal Greyhound documents show drivers are supposed to stop about every 150 miles, get out and walk around the bus, check the tires and stretch, to mitigate fatigue.
But CNN discovered that the so-called rule, known as rule G-40, is treated as a guideline. It’s not enforced.
“Remember Rule G-40: Stop approximately every 150 miles to check tires and walk around the bus for a safety stop at roadside rests. Use these stops to refresh yourself and stay completely alert by using these short-term alertness management actions,” a 2012 Greyhound information bulletin states.