The likelihood function is
so take the log of that, the log likelihood function is then
Differentiate this with respect MOO and set it equal to 0.
The solution/point estimator is the sample mean.
You should take the second derivative to prove it's a max, or use the first derivative test.
Not many people do that, but you should.
As for traffic flow in chicago, there are plenty of jokes I can make.
I called a few years ago complaining about how the red lights are not in phase.
The guy in charge is a former student from my school.
The light one block from my apartment is still is out of phase.