Guardrail Standards

Hi all, does OSHA require any standards on guidrails for ground level walkways or do these standards only apply when raised?

To give a frame of reference we are looking to install a walkway that will be less than 6 inches from the ground and is essentially used to guide people where to walk more than to prevent a fall hazard.

Does this walkway still have to meet OSHA standards regarding guardrails? Am I looking in the correct location [1926.502]?