The motorist is better served searching for (a changing traffic light) and (a pedestrian entering the roadway in front of a motorist's vehicle) hazards to provide sufficient time to implement the rest of the ipde process.

correct answer is Potential and  immediate

Explanation:

solution

the motorist is very quick responding and very Potential when he changes the traffic light with immediate implementation  when he sees some pedestrian is entering on the roadway  

for providing sufficient time for implement rest of  Identify, Predict, Decide, Execute process  

so correct answer is Potential and  immediate

answer; i believe that the correct answer is rapid and subsequently slow down;

i think it is the third one.