Support assembly

A vehicle including:

• an enclosed load carrying compartment having a roof;
• a elongate guide that is mountable on said roof, the elongate guide having a section and opposing stops at opposing ends of the elongated guide, the elongated guide mounted on an elevated structure for the movement of a person on the elevated structure;
• a base adapted to engage the elongate guide and capable of movement along the elongate guide between the two stops while remaining engaged therewith, the base including a longitudinally extending channel with a traverse cross section, wherein the traverse cross section is adapted to receive the section of the elongated guide;
• and
• a support structure with a first portion pivotally connected to the base and a handle with a locking handle spaced from the base on the support structure, the first portion including a lock for selectively locking the support structure via the pivot connection in an intermediate attitude relative to the base at an inclination between a generally upstanding attitude and a generally horizontal attitude using the locking handle, and wherein the lock handle is for selectively engaging and disengaging the lock to pivot of the support structure in relation with the base, and wherein a person holds the handle to move the base along said guide while walking on the roof

A guide rail mountable on an elevated support surface of a structure capable of supporting a person moving about on same, the guide rail comprising:

• an elongate piece with opposing ends attached longitudinally along the elevated support surface connected thereto with a plurality of connectors, wherein each connector includes a first part attached to the elongated piece and a mounting plate for attachment to the elevated support surface;
• at least two stops at the opposing ends of the elongated piece;
• and
• a base with a longitudinal channel for travel along the elongated piece, and to stop at the stops at the opposing ends along the elongated piece, a breaking means, and a support structure pivotally connected to the base.