The city collected $76 million for the CTA last year from a real estate transfer tax on sellers. The money will be used to pay down the transit agency’s pension debt. [Flickr/CTA]

Aldermen green-lit a routine budget measure on Tuesday aimed at helping the CTA pay down its pension debt — but not before firing a shot across the bow that the agency’s leaders need to spend more time in the limelight answering for incessant safety and reliability issues.