Question

3. What are the two microscopic traffic stream parameters? 4. In speed-flow-density relationships, we use which speed? (space mean speed)/ (time mean speed) 5. Time headway is the time difference between bumpers/rear bumpers 6. The speed limit on a highway is set based on 85a percentile speed. True /False 7. You should be able to identify the following basic q-u-k relationships (shape), what's on x and what's on y, and salient points on the curves. of two successive vehicles. Front 0 4 Density Flow (veh/h) 8. Name a couple of uninterrupted flow roadways 9. Name a couple of interrupted flow facilities 10. If traffic flow is affected only by the mutual interaction between vehicles, that facility is most likely a/an- -highway 11. Is space mean speed ALWAYS lower than the mean speed for given section a roadway? (yes) 12. Poisson distribution deals with random arrivals. True / False 13. Poisson distribution deals with discrete arrivals. True / False 14. Poisson distribution deals with discrete random arrivals. True / False 15. Exponential distribution is a special case of Poisson distribution. True / False (4a) MO1 paads:

Answer 1

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First four subparts are to be solved hence solving first four for you.

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o microscopic parametersi- a Time headway O space head way microscopic parameter include seperation measurement ine headway. That can be meashed in terms of space and time.] ® space-fion clensity Relationshipsi- Relation is q=k us Flow Density x space meam . speed Hence speed used is space mean speed] I Time neadway :- It is the difference between front time for a first venich len reachi ng a point in highway and the front of second venice Reaching the same point in highway. Generally Calculated in seconas? #[ Time of two succesive venicles] I front bumpers] speed limiti speed limit is generally set on 35th pacentile speed only 157 exceeas this limit. Hence True. ①