which of these is a feature of audible pedestrian crosswalk signals?
o
a. pedestrian tracking
o
b. emergency instructions
c. button location signaling
o d. responses to voice commands
#apex

D

Explanation:

usually it would be the audio played by the stopwalk that says "wait" or some such before it beeps and tells you its ok to go

answer; the correct answer is medical care service field;