That move could be a signal that a settlement between the parties isn't likely.
Issues with the A Line's crossing gates required train operators to blare their horns at every crossing, annoying nearby residents.
The break from contractor Denver Transit Partners has divided some of RTD's board of directors.
Propositions 109 and 110 offer dueling strategies to accomplish long-awaited road and transit improvements.
In June of this year, Amtrak announced plans to shutter service from Albuquerque to Dodge City, Kan., citing millions of dollars in repairs needed along the 219-mile stretch.
The D, F, H and L lines will all be closed Sept. 14-24 for rail line replacements.
An initial fleet of 250 electric-assisted bikes landed on city streets Friday.
Mayor Michael Hancock is promoting a series of plans for the city that spans the next 20 years.
Eight "micro-mobility" companies have permits to launch e-scooters, dockless bicycles and other transit options in Denver.
The electric scooters meet a car-free public transportation desire, but infrastructure shortcomings and lack of city preparedness cause issues.