Bar Balancing Speed Ballast Ballast Train Banjo Bank Banking Locomotive Battery Battery Locomotive Bi-Directional Signalling BITE Blade Bleed Hole Brake Beam Brake Blending Brake Block Brake Cylinder Brake Frame Brake Pad Brake Pipe Brake Release Valve Brake Reservoir Brake Resistor Brake Rigging Brake Systems Brake Types of Brake Van Block Blocking Back BO-BO Body Bolster Bogie Bolster Boss Box Boxing Brake Breakaway Buckeye Coupler Buffer Buffer Beam Buffer Locking Buffer Stop Business Business Model