Concerns raised about gaps in airline and tour bus safety . Safety gains prominence with focus on 787 crashes , and deadly bus crashes . Leading U.S. safety advocate especially concerned about tired tour bus drivers . `` We want a safe industry , plain and simple . Regulators challenge bus safety oversight , say government , when it uncovers flaws .
Concerns raised about gaps in airline and tour bus safety . Safety gains prominence with focus on 787 crashes , and deadly bus crashes . Leading U.S. safety advocate especially concerned about tired tour bus drivers . Regulators challenge bus safety oversight , say government , when it uncovers flaws .