From September to May, commercial semi-trucks — or CMVs — are required by law to carry tire chains on I-70. However, that hasn’t solved the traffic headaches or put an end to major crashes ...

"It takes time, and it's cold, and it's also one of the riskiest jobs that a truck driver is ever going to have to do," Fulton said. In 2014, a bus driver was killed while putting on snow chains ...