210.1. Notwithstanding paragraph 2 of section 210, rail-bound equipment may be used where it is only partly visible to the operator provided that measures be taken to meet one of the following conditions:(1) no one, with the exception of those persons whose presence is required to operate the equipment, may enter the area where the equipment is moving;
(2) the remote control shall be equipped with a device that will stop the equipment as soon as any person enters the area where the equipment is moving.