What does BNSF require in terms of flangway width at turnouts?

BNSF requires a flangeway width at turnouts to be at least 1.5 inches. This specification is crucial for ensuring the proper passage of the train wheels through the turnout, allowing for safe and efficient operation. If the flangeway width is too narrow, there is a risk of wheel flanges catching, which could lead to derailments or other safety issues. The 1.5-inch minimum width supports proper alignment and prevents excessive wear on both the track and the wheels. It is an industry-standard practice to maintain a specific flangeway width to enhance train safety and performance.