Final answer:
Vulnerable roadway users include cyclists, pedestrians, and motorcyclists, but not truck drivers having a bad day.
Explanation:
A vulnerable roadway user can be any of the following except a truck driver having a bad day. Vulnerable roadway users include cyclists, pedestrians, and motorcyclists. Truck drivers are not typically considered vulnerable roadway users unless they are in a situation where they are at a disadvantage.
Learn more about roadway safety here:
https://brainly.com/question/32662348
