Ashtray ban in company vehicles? The government recommends it, plus more rules to stop secondhand smoke in the workplace. Listen to hear what NIOSH says. A tobacco-free work environment is the goal of the The National Institute for Occupational Safety and Health. Their new recommendations, including the removal of ashtrays from business trucks and cars, were just released. Dan Clark asks if ashtray removal is really necessary, and invites your comment at www.facebook.com/thesafetybrief