Practice Summary (31.8) - Fundamental relations of traffic flow - Transportation Engineering - Vol 2

Practice: Summary

Lesson 31.8Fundamental relations of traffic flow

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7 questions

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3 cards from this section. Quick, good the night before a test.
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6 sample questions

Question 1.
What is time mean speed?
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Think about how you measure speed over time.
Question 2.
What does space mean speed focus on?
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Consider the duration vehicles spend traveling.
3Question 3.
What is true about time mean speed?
- Always less than space mean speed
- Always equal to space mean speed
- Always greater than or equal to space mean speed
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Consider how both speeds are defined.
4Question 4.
Fundamental diagrams relate which three elements?
- Speed
- density
- flow
- Age
- speed
- density
- Speed
- flow
- time
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Focus on important traffic flow measurements.
Question 5.
You observe a traffic stream for one hour with 180 cars passing. Two are moving at 10 m/s, five at 20 m/s, and the rest (173) at 15 m/s. Calculate the time and space mean speeds.
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Use the definitions of mean speeds correctly and set the equations up carefully.
Question 6.
If a road can hold a maximum of 40 vehicles but sits at 30 causing slow movement, how does this reflect in a flow-density diagram?
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Refer back to how flow changes with density on that diagram.

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