Correct answer choice is :
B) Directional beacons
Step-by-step explanation:
It has been documented that giving a full locator mode while the flashing doesn't walk, from the available walker beacon on the opposing end of the crosswalk, increases efficiency for pedestrians who are blind in making crossings within the crosswalk. The most current references for convenient pedestrian signals (APS) are based on a completely distinct type of equipment and connection than the above cuckoo-chirp type beacons that have been introduced in many parts of the US.