Northeast Operating Rules Advisory Committee

The NORAC rulebook is used by full and associate member railroads, located mostly in the Northeast United States.

The rules cover employee responsibilities, signaling equipment, procedures for safe train movement, dealing with accidents and other topics that directly and indirectly affect railroad safety.

These rules govern operation on main lines, defined as those with some form of block control system.

In May 1985, a second meeting was held, with eight railroads present, five of the original six (Metro-North withdrew) plus Providence and Worcester, Long Island Rail Road, and Boston & Maine.

In 1993 the fourth edition combined the MBS and VCS rules into a single "Form D Control System" (DCS).