June 19, 2019 5:47 pm Millions of Americans Driving High, AAA Report Says Millions of Americans are hitting the roads within an hour of smoking marijuana, a new report from the AAA Foundation for Traffic Safety. As seen on NBC4 News at 4 p.m. on June 19, 2019. US & World Videos 3:18 USC's commencement preparation includes increased security patrol 1:56 1 person killed after car crashes into South LA church 3:30 Protest on USC campus continues ahead of graduation 0:58 Mystik Dan wins 150th Kentucky Derby in photo finish 0:43 LA County releases sterile mosquitoes as warmer weather nears