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- A depth of not less than 22 inches (559 mm) where the treads on the descending side of the transition have greater depth.
- A depth of not less than 30 inches (762 mm) where the treads on the descending side of the transition have lesser depth.
A distinctive marking stripe shall be provided at each nosing or leading edge adjacent to the transition. Such stripe shall be not less than 1 inch (25 mm), and not more than 2 inches (51 mm), wide. The edge marking stripe shall be distinctively different from the stepped aisle contrasting marking stripe.