Loading gauge

A loading gauge defines the maximum height and width for railway vehicles and their loads to ensure safe passage through bridges, tunnels and other structures. In the case of live steam operation, the Loading gauge must include clearances for passengers.

MiniRail Standard
The following Loading gauge was published by Mini-Rail Corporation in the late 1980's. The IBLS does not presently provide a Loading gauge standard.



Standard vs Narrow Gauge
Vermon Smith provided the following loading gauge.



Prototypes
See AAR Loading Gauges for North America, Wikipedia