42.1. Overview

Try these first

1. 1.

   What is the definition of cycle time?

   Hint

   Think about how long it takes for all lights to complete their sequence.

2. 2.

   Define green splitting.

   Hint

   Consider how traffic might be distributed at an intersection.

3. 3.

   What is the primary benefit of green splitting?

   • A) Enhances road safety
   • B) Allocates time based on volume
   • C) Increases construction costs

   Hint

   Consider why we need to adjust times for busy times.

4. 4.

   True or False: Lost time is irrelevant to effective green time calculation.

   • True
   • False

   Hint

   Think about what happens at the end of a green light.

5. 5.

   Using the provided critical lane volumes and total cycle time, calculate the green split for a lane with a 500 vph volume. Assume total effective green time is 120 seconds.

   Hint

   Make sure to calculate the total critical lane volume first!

6. 6.

   Analyze a scenario where adding exclusive pedestrian signals reduces delays by 20%. How might this impact overall traffic flow?

   Hint

   Think about how pedestrian crossings can change driver behavior.