Carpet Stair Nosings
Stair Nosings are used to define the edge of steps by inserting a coloured, slip resistant insert which is tested to the Australian Standards and 'Light Reflectance Values'. The stair edgings reduce the risk of any trip hazard and prolong the life of the floor covering.
https://eworld.dataquestdigital.com.au/~capfloor/files/Carpet-Nosings0001.pdf