What is the minimum flangeway depth required in Class 1 track according to the FRA?

The minimum flangeway depth required in Class 1 track according to the Federal Railroad Administration (FRA) is 1 1/2 inches. This specification is crucial because the flangeway depth ensures that train wheels can navigate through switches and crossings safely without derailing. A flangeway that is too shallow could result in wheel flanges binding or becoming stuck, which poses significant safety risks, including derailments.

Class 1 tracks have specific requirements to maintain safety and operational integrity, and the specified depth helps accommodate the dimensions of railway wheels while also considering wear and operational conditions. The depth of 1 1/2 inches is a balance between safety and practicality in rail operations, helping ensure smooth transit while preventing potential hazards. This adherence to standards is critical in maintaining rail infrastructure and ensuring the safe movement of trains.