
1) Pedestrian infrastructure
Found on
https://www.crosswordclues.com/clue/curb-cut

A curb cut (U.S.), curb ramp, dropped kerb (UK), pram ramp, or kerb ramp (Australia) is a solid (usually concrete) ramp graded down from the top surface of a sidewalk to the surface of an adjoining street. It is designed for pedestrian uses and commonly found in urban areas where pedestrian activity is expected. In comparison with a conventional c...
Found on
http://en.wikipedia.org/wiki/Curb_cut

A cut in the curb where a trail crosses a street. The curb cut should be the same width as the trail.
Found on
http://www.americantrails.org/

(kerb kut) a portion of the curb that is removed so that the sidewalk gently slopes to the street, thus increasing access to the environment for individuals in wheelchairs.
Found on
http://www.encyclo.co.uk/local/21001

Also called a curb ramp, it is a depression built into the curb of a sidewalk to permit passage by a wheelchair. The incline should not exceed a gradient of 1:12 and the flat surface width should be no less than 4 feet wide.
Found on
https://www.encyclo.co.uk/local/23238
No exact match found.