The Consist Car Count,<kuid2:116387:7:1> rule displays the number of cars in the train you're currently driving. The counts shows in the HUD.
The Display Train List,<kuid2:57145:80104:1> rule displays a list of all trains in the session, when you press the K key. Display includes # of locos, # loaded cars, # empty cars, total tons and train length.
Bob