Practice Entry, Exit And Island Radius (40.4.3) - Traffic Rotaries - Transportation Engineering - Vol 2

Practice: Entry, exit and island radius

Lesson 40.4.3Traffic Rotaries

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9 questions

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6 sample questions

Question 1.
What is the purpose of the entry radius in a rotary?
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Think about how curves influence driving speed.
Question 2.
Why should the exit radius be larger than the entry radius?
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Consider traffic flow efficiency.
3Question 3.
What should be the ideal speed for vehicles at the entry of an urban rotary?
- 30 km/h
- 20 km/h
- 25 km/h
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Reflect on speed limits discussed in the section.
4Question 4.
True or False: The exit radius should generally be less than the entry radius.
- True
- False
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Think about traffic flow dynamics.
Question 5.
Design a rotary for a suburban area where the approaching traffic volume is moderate. Discuss how you would determine the entry and exit radii based on expected speed limits and pedestrian traffic.
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Consider ratios and pedestrian flow discussed in the text.
Question 6.
Analyze the relationship between the entry and exit radii in a busy urban rotary and propose measurements based on the design requirements of reducing speed and accommodating heavy traffic.
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Look at the problem from both a safety and flow perspective.

5 more questions in this section. Enroll free to practise them all.