by icgsteve
In particular, railroads speak of the "six cardinal rules" that, if broken, will result in an automatic suspension. These include running a stop signal, exceeding the speed limit by more than 10 miles per hour, failing to use the air brakes safely, occupying a track without permission, tampering with safety equipment, and operating the train under the influence of drugs or alcohol. Breaking these rules will usually result in an engineer's license being revoked for at least 30 days, with repeat offenders sidelined for longer.http://www.slate.com/id/2200230/