Enrol to start learning
Reading is open to everyone. Enrolling is free, and it is what unlocks the audio lessons, practice tests and progress tracking.
21. Traffic Signal Design-II
The chapter discusses traffic signal design, focusing on green splitting, pedestrian crossing requirements, and performance measures of signalized intersections. Effective green time allocation and the evaluation of signal performance using various delay metrics are key aspects covered. The chapter also emphasizes the importance of accommodating pedestrian needs through careful phase design.
Sections
This section delves into the advanced aspects of traffic signal design, focusing on green time allocation, pedestrian crossing considerations, and performance evaluation metrics.
Green splitting is determined by the critical lane volumes and effective green time.
Pedestrian crossing times are calculated based on walking speed and lost time.
Performance measures such as delay, queuing, and stops are crucial for evaluating signal effectiveness.
Green Splitting
The allocation of effective green time among different phases of a traffic signal based on critical lane volumes.
Amber Time
The duration of the yellow signal light which signals drivers to prepare to stop.
Pedestrian Green Time
The calculated time allocated for pedestrians to safely cross an intersection.
Delay
The total time lost by vehicles while traversing an intersection, commonly used as a performance measure.
Practice Exercises
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting
Get your answers marked and your progress tracked
Enrol free