DJ of DJsTrains
Jun 20, 2019
Great footage and explanations
Loaded ore cars will also cause the track structure to 'creak' as the high weight of the cars passes over it.
The valve you are talking about on the caboose is a two way valve - it can be used to sound the warning for road crossings on a shove; it can also be used to apply the brakes on the train - either at a service rate or in Emergency as necessary.