Section 60, The Machinery (Safe Working Citation

Where a main travelling-way lies between a double lineof rails, such lines shall be kept sufficiently far apart to allow a clearance of not less than two feet between any two trucks passing each other on the respective lines; provided that this regulation shall not apply to haUlageways in which the speed of the trucks is less than four miles per hour and the grade less than one in twelve. Machinery (Safe Working & Inspection) [Cap. 218 1861