What is the April expansion factor if the April ADT is 3078 and the AADT is 3419?

To determine the April expansion factor, you need to compare the Average Daily Traffic (ADT) specific to April with the Annual Average Daily Traffic (AADT). The expansion factor is calculated by dividing the AADT by the April ADT.

In this case, the calculation would be as follows:

Expansion Factor = AADT / April ADT

Expansion Factor = 3419 / 3078

By performing this calculation, you find that the result is approximately 1.11.

This means that the traffic volume observed in April (3078 vehicles per day) is approximately 1.11 times less than the average traffic volume throughout the entire year. The calculated expansion factor allows you to adjust or expand monthly traffic data to an annual basis, which is essential for traffic analysis and planning purposes.

Understanding the relationship between monthly and annual traffic volumes is crucial for making informed decisions in traffic engineering and operations.