I wish to leave some comments on the above issue. First, blind persons travel
freely and independently every day without such things. We use the traffic as
our cues to cross streets and get around safely. Additional noise may be
distracting and can cause more harm than good. If any device is used at all,
it should be in the form of a tactile device to eliminate excess noise and
should be placed only on intersections that have unusual street crossings or
patterns of traffice. To place these at every intersection that has traffic
lights is unrealistic and far to expensive and simply unneeded. Most
intersections provide blind persons enough information to determine the
difference between the street and sidewalks.
Thank you
Mike Klimisch