As states liberalize their marijuana laws, public officials and safety advocates worry that more drivers high on pot will lead to a big increase in traffic deaths. Researchers who have studied the issue, though, are divided on the question.
The National Transportation Safety Board says that insufficient route planning, a distracted pilot driver and an inadequate permitting process by the state of Washington all played a part in the Interstate 5 bridge collapse north of Seattle last year.
Surveillance footage shows the helicopter taking off from the heliport on top of Fisher Plaza.
The collapse of an Interstate highway bridge in northern Washington state is a wake-up call for the entire nation, the chairman of the National Transportation Safety Board says.
It’s likely that fires on two Boeing 787 Dreamliners were caused by overcharging lithium ion batteries, aviation safety and battery experts said Friday, pointing to developments in the investigation of the Boeing incidents as well as a battery fire in a business jet more than a year ago.