The agency has called for a renewed dedication to occupational safety.
An internal investigation discovered the tampering.
FMCSA must assess: the risks associated with improperly maintained or inspected CMVs designed or used to transport passengers; the effectiveness of existing federal inspection standards in mitigating the risks associated with improperly maintained vehicles and ensuring safe and proper operation; and the costs and benefits of a mandatory inspection program.
PHMSA will distribute more than 1.5 million free copies of the guidebook to firefighters, emergency medical technicians, and law enforcement officers nationwide -- the goal is to have one in every public service vehicle across the country.
"This rule makes clear that coal miners have a right to know a full picture of their health. No workers should lose their lives because of known dangers that were kept from them in the interest of their employers," said DOL Office of Workers' Compensation Programs Director Leonard Howie.
OSHA has cited GE's Circleville, Ohio, plant for two repeated and three serious safety violations.
The company was previously cited in 2012 for machine hazards, according to OSHA.
Last year's national stand-down reached more than 2.5 million workers and federal OSHA's goal is to reach 5 million workers this year.
Austin's mayor announced April 25 that he opposes the ordinance from Uber and Lyft that would repeal the city's current requirement to have drivers fingerprinted as part of a national criminal background check.
The guide is based on the work of the ICAO Fatigue Risk Management Systems Task Force and includes input from experts with experience in general aviation operations.