Sometimes, even powerful bureaucracies are brought low by the diligence of individual citizens.

That's exactly what happened on Friday.

In this case, Muni makes a promise to public transit riders that it can't/won't keep.

We'd never know about that if it weren't for rider Aaron Kitashima, who first raised the alarm on his blog a few weeks ago that transit ticket vendors wouldn't accept discounted BART-to Muni coupons when leaving AT&T Park. The discount is only a quarter but it's the policy; don't offer it, especially in an age of economic woes and the need to cut down on gas use, if you're not going to give it.

Muni spokesman Judson True agreed, telling me that "we are planning to make sure that these coupons are accepted beginning with the Giants next home stand." Which was this last Friday. "We're committed to taking whatever steps necessary with the staff to see that they're accepted."

By Friday morning, Muni's web site was still saying the coupons would not be accepted. Again Judson True stepped up: "We're gonna get that (web site language) changed," he said. Those coupons will be accepted."

This blog originally appeared on sfgate.com. To read the rest, click here.