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Fundamentals of Transportation/Traffic Flow/Solution

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TProblem
TProblem
Problem:

Four vehicles are traveling at constant speeds between sections X and Y (280 meters apart) with their positions and speeds observed at an instant in time. An observer at point X observes the four vehicles passing point X during a period of 15 seconds. The speeds of the vehicles are measured as 88, 80, 90, and 72 km/hr respectively. Calculate the flow, density, time mean speed, and space mean speed of the vehicles.

Example
Example
Solution:

Flow

Density

Time Mean Speed

Space Mean Speed