Nevertheless, we're still for some reason comparing to a terrible transit system, the SF Muni. As usual, if you compare car driving to a terrible transit system, you conclude transit sucks.
NYC's transit system used to have terrible crime rates decades ago, but is much safer than the SF Muni poster describes. Many transit systems outside of the US are even better.
Given the numbers from the previous post, you should get into 0.02 crashes per decade.
You are about 2.5x more likely to die per mile driven on a city vs highway (http://freakonomics.com/2010/01/29/the-irony-of-road-fear/). Assuming the same ratio for crashes, you'd expect to get into 0.05 crashes per decade.
As a rough estimate, you'd expect to be a victim of a crime on the SF Muni about 40x more often than being in a car crash.