DENVER -- RTD marked the one-year anniversary of the troubled A Line between Union Station and Denver International Airport on Friday.
The so-called train to the plane has been plagued by all kinds of problems since it began service.
The transit service hoped to put all of that in the past with a Rider Appreciation Day and festivities at stations along the line and at the airport.
RTD said the line has carried nearly 5 million passengers between downtown and the airport. And it brags about the 89 percent on-time performance rate.
But pictures of passengers being evacuated after a train broke down and ongoing problems with the software controlling the safety gates on the line's east side crossings have haunted RTD and passengers for the past year.
A Line trains have been late more than 3,000 times and the company operating it has been fined more than $1 million for those problems and delays.
Because of ongoing concerns with the A Line, the opening of the new G Line to Arvada and Wheat Ridge has been delayed.