Traffic Engineering MCQ with answer and solution

Concept

Traffic volume data is shown using AADT, trend and variation charts, flow maps, volume flow diagrams and the 30th highest hourly volume.

Step-by-step solution

1. List the standard ways to present traffic volume data: AADT, trend charts, variation charts, traffic flow maps, volume flow diagrams at intersections, and the 30th highest hourly volume. 2. Traffic variation charts are in the list. 3. AADT is in the list. 4. Pattern of traffic (flow maps and diagrams) shows how traffic moves, so it is a form of presentation. 5. Modal average is a statistical term. It is not a standard way to present volume data. 6. Answer is (B).

Explanation

Traffic volume data is usually shown as AADT, variation charts, trend charts, flow maps and flow diagrams. These show how volume changes with time and place. Modal average is not a standard method of presenting traffic volume.

Why the other options are wrong

A: Variation charts show hourly, daily and seasonal change, so they are a valid method. C: The traffic pattern, shown by flow maps and diagrams, is a valid method. D: AADT is the most common form of presenting volume data.

Shortcut

Remember: AADT, charts, maps, flow diagrams and 30th HV. Anything outside this list is the odd one out.

Common mistake

Thinking any statistical average (mode) is used to present volume data. Only AADT and peak-hour values are standard.