**Sub-problem 1b: Analysis of
the Eastbound Freeway Section**

Using
the method to calculate FFS based on BFFS as shown in Chapter 23, our FFS is projected to be
55.5 mph, which is very close to what the data shows us in
Exhibit 4-8.

Now we need to revisit
Exhibit 4-11 and see that the next thing to do is to
calculate the peak 15-minute flow rate.