Figure 1.
The diagram in panel a compares a clearance gauge, G C, with a restriction curve and an envelope curve around the vehicle profile. The diagram in panel b presents a three-car railway vehicle with an overall length of approximately 46.3 metres. Individual car lengths measure 14.9 metres and 14.5 metres. X, y, and z reference axes indicate orientation. Plan and interior layout views identify seating areas, sleeping compartments, service spaces, toilets, circulation areas, and equipment distributed throughout the three connected cars.(a) Cross-section of the ‘AliSa’ car body; (b) train formation (top) and interior layout for the upper and lower levels (bottom)