Question

Maximum number of vehicles that can pass through a given point on a road/hour, is its

• A. Traffic Flow
• B. Traffic Capacity
• C. Traffic Volume
• D. Traffic Density

Hint:

Traffic capacity is an important measure for understanding how well a road or street can handle vehicle load.

Answer 1

The Correct Option is B

The question's wording, "maximum number... per hour", is the textbook definition of one specific traffic engineering term.
Traffic Volume is the actual observed count, Traffic Flow is the general rate of movement, and Traffic Density is a spatial measure of vehicles per length of road, none of these is defined as a maximum.
Traffic Capacity is specifically defined as that upper limit.
So, the correct answer is Traffic Capacity.

Answer 2

These four terms are frequently confused, so it helps to line them up by what kind of quantity each one measures before picking the answer:

1. Traffic Volume: An observed, actual count of vehicles over time, can be less than the maximum possible.
2. Traffic Flow: A rate describing how smoothly and quickly vehicles are moving, not itself a maximum count.
3. Traffic Density: A count of vehicles per unit length of road at an instant, a spatial rather than a time-based, per-hour measure.
4. Traffic Capacity: The theoretical upper bound on vehicles per hour that a point on the road can physically handle, precisely the "maximum number" the question asks about.

Only one of these four terms is defined as an upper bound rather than an observed or spatial measure.

Therefore, the correct answer is Traffic Capacity.