This morning, after I finished a short interview with KLBJ-AM's morning news show (despite being well-meaning in their attempts to cover local issues, the format isn't very helpful - I only spoke about ten sentences total), I rode my bike to the bus stop at 38th and Medical Parkway. Since I was up extra early, my choices were to take the #3 bus at 7:16 (arriving up near my office at 7:44) or take the more comfortable and quicker express bus at 7:48 (arriving near my office at 8:08).
I arrived at the bus stop about 5 minutes early (late for me), and waited. And waited. And waited. The bus finally showed up at about 7:30.
It's now 8:03 and I'm finally at my desk. And by the way, thanks to the motorists on Jollyville who were relatively understanding of my slow cycling due to the water. I didn't get splashed once.
The bus wasn't late because it makes a lot of stops. That's factored into the schedule.
The bus wasn't late because it travels on city streets instead of the freeway. That's factored into the schedule.
The bus was late because of unpredictable traffic downtown. And because there's no transit priority (bus lanes or other) anywhere downtown, the bus suffers when cars jam the streets.
Now, compare and contrast to Capital Metro's so-called "rapid bus" proposal. Their bus would run through downtown in shared lanes with cars, just like today's #3 did. In downtown and through UT, it is unlikely that it would have been able to hold any lights green (without destroying the sequencing of the lights on that corridor). It would have been able to hold a few lights green outside downtown (but, when I got on the bus at 38th/Medical, we didn't hit more than 2 red lights all the way up to my stop at Braker and Jollyville - and at one of those, we had stopped to pick up passengers anyways).
In short: the "rapid" bus wouldn't have been any more reliable than the city bus I took this morning. And that's not good enough for the taxpayers of Austin.