Merging vehicles should always give existing expressway traffic the right of way.

a. true
b. false

B. False      

Explanation:

An expressway is a highway which are designed for high speed traffic. They have a controlled entrance as well as an exit. There are usually more than two lanes.

vehicles merging in the expressway is very crucial. The increasing speed of the vehicle before entering the expressway will not interrupt the existing traffic in the expressway. The right of way is given to both the vehicles which are on the expressway as well as the merging vehicle to adjust their speed to avoid collisions.

answer; i believe the correct answer is (4) flip a coin as each participant arrives,heads indicates assignment to the first group: tails indicates assignment to the second group;