You are observing traffic in a single lane of a highway at a specific location. You measure the average headway and average spacing of passing vehicles as 3 seconds and 150 feet, respectively. Calculate the flow, speed and density of the traffic stream in this lane.

Answers:

1) flow of traffic =  

2) average speed =

3)density of traffic =

Explanation:

1) to find flow of traffic

we use the relation

where q is the traffic flow and h is average time headway.

insert the value

2) to find average traffic speed

use the relation

where u is average speed S is average spacing and h average time

so inserting the values

3) density of traffic

where K is density of traffic q is flow of traffic and u is average speed

inserting values from above solved parts

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