RTD commuter train 4028 (Hyundai Eagle P3) heads towards Denver International Airport as a United Airlines plane takes off.

Two Denver RTD commuter trains pass each other at Denver International Airport.

RTD commuter train #4012 (Hyundai Eagle P3) heads towards Denver International Airport on the A-Line.

Planes, Trains, and Automobiles. The RTD Commuter Rail A-Line "Train to the Plane" runs towards the terminal at Denver International Airport just as a United Airline Boeing 737 takes ... (more)

Heavy snow falls at Denver's Union Station as RTD 4001 (Hyundai Eagle P3) uses power from the catenaries to move through the yard.

RTD 4034 (Hyundai Eagle P3) leaves Denver Union Station behind and will run on the A-Line to Denver International Airport.

A spectacular sunrise provides the background for RTD commuter train #4023 (Huyndai Eagle P3) as it runs the elevated section over the Union Pacific's 36 Street Yard in Denver, Colorado.

Snow is falling at Denver's Union Station as RTD commuter train #4002 (Hyundai Eagle P3) passes the Winter Park Express Ski Train and heads for Arvada, Colorado.

RTD 4037 (Hyundai Eagle P3) commuter rail train arrives from Denver International Airport as it drops down from the elevated track north of Denver's Union Station.

RTD commuter rail train #4041 (Hyundai Eagle P3) passes the BNSF engine servicing facility in Denver, Colorado.

RTD Light Rail train #147 runs through Littleton, Colorado, passing an idle DPU of a coal train waiting to head to Denver.

Heavy snows blanket a colorful RTD commuter rail train as it runs pas the BNSF engine servicing facility in Denver, Colorado.

RTD Light Rail Train #323 runs past an idle BNSF heavy train in downtown Denver, Colorado.

RTD's Hyundai Eagle P3 commuter train passes a water tower at sunrise as it heads towards Denver's Union Station.

RTD Light Rail train #263 runs towards Littleton, Colorado on a line that parallels the heavy BNSF and UP rail traffic on the Joint Line.