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Question
Space-mean speed represents
A.
the instantaneous speed of a vehicle at a specified section or location
B.
the effective speed with which a vehicle traverses a particular route between two terminals
C.
the average speed of vehicles in a certain road length at any time
D.
the average of instantaneous speeds of observed vehicles at the spot
Answer ( Option C)

the average speed of vehicles in a certain road length at any time

Solution

Space mean speed represent the average speed of vehicles in a certain road length at any time
Note:
Spot speed represent the instantaneous speed of a vehicle at a specified section or location.
Time mean speed represent the average of instantaneous speeds of observed vehicles at the spot

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