Specify whether traffic signals have tactile indications that it's safe to cross
Specify whether traffic signals have a button for pedestrians
Specify whether traffic signals have sound signals
Determine the heights of kerbs at crossings
Specify whether pedestrian crossings have traffic signals
Determine road names and types
Survey whether benches have backrests
merged some sidewalks to make the data more homogenous
merged some sidewalks to make the data more homogenous
improved address of the bld by adding it to the entrances
fixed some addresses after survey
specified street direction to some oneway streets