How many people use the roads in the us?

As of recent estimates, around 270 million registered vehicles are in use in the United States. Considering an average of 1.5 to 2 people per vehicle, it can be inferred that hundreds of millions of individuals use the roads regularly. Additionally, pedestrian traffic contributes to this number, making it difficult to pinpoint an exact figure, but it likely exceeds 300 million people at any given time.