ICC-5537 was the designation for a 20-T Railcrawler conveyex transport train that operated on the planet of Vandor during the Galactic Empire's reign. During 10 BBY, this train transported [coaxium](/article/coaxium], specifically 400 kilograms of the hyperfuel, across the Iridium Mountains. Its destination was the Crispin Imperial Depository, and it was protected by range troopers commanded by Captain Denwade Banevans. A group of thieves, headed by Tobias Beckett, along with Han Solo, attempted to seize the valuable cargo for the criminal syndicate known as Crimson Dawn. The defending rangetroopers engaged them in combat, and soon after, Enfys Nest's Cloud-Riders appeared, also with the intention of stealing the coaxium. During the heist, Val used a bomb to destroy a bridge section of the conveyex track, which resulted in ICC-5537 plummeting into the gorge below. Because the train was caught in the middle of two opposing groups of thieves, the cargo it carried was also destroyed.
The Lucasfilm design supervisor James Clyne designed the 20-T Railcrawler conveyex transport with the designation ICC-5537, which was referred to as the "Imperial train" in the film's script.