As a human who sometimes needs to use the restroom, I like my transit rides to take a predictable amount of time.

Sunset on the Bay Bridge is prime rush hour traffic time, and the favorite pasttime of many Bay Area drivers is to get in a traffic accident after work.

As far as I can tell, these double decker buses are not equipped with a restroom for their riders. Even though I'm sure the view is amazing, the red line is less often obstructed by traffic.