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In Coughlin's CIR train, a Roadtec 950-hp RX-900 cold planer provided the train's propulsion, towing a RT-500 cold recycler and a nurse tank for the emulsions. It also pushed a water truck and a slurry tanker that are always with the train.

The RX-900 also pushed another emulsion tanker and slurry tank when present to replenish the tankers hooked to the train. Those two replenishing tankers are attached to the train just long enough to pump off their products and then go to a staging area where they are refilled to return to the train.

Darren Coughlin says the refilling typically took place five to eight times in a workday. Careful planning and timing of these material transports has a positive impact on the productivity of the train.

Roadway grade and slope

A 12-foot 6-inch-wide cutter drum was used on Coughlin's RX-900 in this train and operated in the downcut mode. Coughlin preferred the gradation produced with the downcutting process. The RX-900 is also capable of upcutting in this same rear-loading configuration. Bi-directional milling capability is a unique feature of Roadtec cold planers.

MOBA brand sonar grade and slope controls were used with the RX-900 milling machine to cut the surface to the required profile. The pavers that followed also used automated grade and slope devices to hold spec.