Traffic studies

What is AADT
Highway Design, Pavement, Traffic Engineering, Transportation Planning

What is AADT (Annual Average Daily Traffic) in Traffic Engineering?

Annual Average Daily Traffic (AADT) is one of the most fundamental measures in traffic engineering and transportation planning. It represents the average number of vehicles that travel on a roadway segment each day over the course of an entire year. Put simply, it is a way to smooth out traffic variations across weekdays, weekends, and […]

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Peak Hour Factor
Traffic Engineering, Trainings, Transportation Planning

Understanding Peak Hour Factor (PHF) in Traffic Studies: What It Is, Why It Matters, and How to Use It

Traffic engineering is full of nuanced concepts that help us better understand how roadways function under pressure—and one of the most important of these is the Peak Hour Factor (PHF). Whether you’re conducting a Traffic Impact Study (TIA), designing an intersection, or calibrating a simulation model, PHF plays a critical role in capturing the intensity

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