def normalize_location_cot(location_str):
  """
  When geocoding intersections, the City of Toronto geocoder maintained by GCC expects input of
  the form "Street 1 and Street 2", but some Ped Delay files use "at" and "over" (the latter for
  overpasses).

  We normalize these to use "and".
  """
  return location_str.replace(' at ', ' and ').replace(' over ', ' and ')