Caitlin has five coaches that belong to the Other Railway. They are used for delivering passengers from the Mainland to Sodor.
Unbeknownst to Caitlin, Charlie once shunted Annie and Clarabel together with her coaches by mistake, and they were returned to Thomas by Hiro, who set out to the Mainland to retrieve them.
Caitlin's coaches are based on Pullman luxury coaches. Spencer's Coaches, Connor's Coaches and Aubrey and Aiden share the same basis.
Caitlin's coaches are painted in a similar colour scheme to her own; fuchsia with light blue and grey lining.