The escalator brushes or 'skirt deflector' is designed to minimise the risk of trapping objects between the steps and the side of the escalator, known as the escalator 'skirt'.

What are the things on the sides of escalators for?

Escalator brushes are installed on the sides of escalators and moving walkways to keep people from standing too close to the edges.

Why are escalators always broken?

The consultants' report stated that in addition to problems with installation, some of the problems they noticed were “inherent to the design of the escalators themselves.” Those problems include premature wear and tear and the improper alignment of mechanical parts.