1. A railway rail with a standard gauge of 1,435 millimeters (4 feet 8.5 inches) between the inner edges of the rails, which is the most common railway gauge used internationally.
The train operates on standard gauge rails throughout Europe.
O trem opera em trilhos de bitola normal em toda a Europa.
2. Railroad track conforming to the international standard width specification for interoperability between different railway systems.
Most European railways use standard gauge rail to ensure compatibility.
A maioria das ferrovias europeias usa trilhos de bitola normal para garantir compatibilidade.