When drivers and motorcyclists share the road with pedestrians, whose responsibility is it to do everything possible to avoid a pedestrian collision? ?

Motorist

Explanation:

In this type of situations, it is the motorist's responsibility to do everything possible in order to avoid a pedestrian collision. This is because the motorist is the person who has control over the vehicle. Turning motorists must yield to pedestrians at intersections with traffic signals, as well as when crossing the street, a driveway or an intersection without traffic signals.