C.R.S. § 42-4-709: Stop when traffic obstructed.

A driver shall not enter an intersection or a marked crosswalk or drive onto any railroad grade crossing unless there is sufficient space on the other side of the intersection, crosswalk, or railroad grade crossing to accommodate the vehicle the driver is operating without obstructing the passage of other vehicles, pedestrians, railroad trains, or railroad on-track equipment, notwithstanding the indication of a traffic control signal to proceed. Any person who violates any provision of this section commits a class A traffic infraction.