08/26/2026
The “Road Laws” series includes three videos, each focused on a different set of laws. To make that information easier to access, the Colorado Department of Transportation has released a video series that explains several new and existing laws drivers should know.
Left Lane Is for Passing — Colorado law requires drivers to keep right unless actively passing another vehicle. Driving slowly in the left lane can cause congestion, aggressive driving and dangerous passing behavior.
Move Over Law — Drivers must slow down and move over when approaching any stopped vehicle on the side of the road with their hazard lights on. This includes stopped emergency, maintenance or tow vehicles displaying. The law is designed to protect first responders, roadside workers and civilians who are vulnerable to passing traffic. If you can’t safely move over, slow down to at least 20 mph below the posted speed limit on highways. On all other roads, slow down to 25 mph or less in a 40 mph zone and at least 20 mph in a 45 mph or higher zone.
Motorcycle Lane Filtering — Motorcyclists in Colorado are allowed to pass stopped vehicles by slowly traveling between lanes such as when traffic is stopped behind a red signal light. Motorcyclists cannot lane split, which involves riding between lanes of moving traffic, which is very dangerous. This video clarifies when lane filtering is legal and what both drivers and motorcyclists should expect to keep everyone safe.
Watch this video to learn about some Colorado lane laws that exist ...