The ad Blaine Coleman wanted to place on AATA buses.
Flint federal Judge Mark Goldsmith says the agency's policy in favor of ads that are in "good taste" is vague and unconstitutional.
Blaine Coleman wants to put an ad on buses that would have skulls and bones and say, "Boycott 'Israel.' Boycott Apartheid." He believes the Israeli government treats Palestinians unfairly.
The Ann Arbor Transportation Authority says it turns down ads that ridicule people. Officials say Coleman's ad would probably turn away riders, but the judge says the First Amendment trumps any business concerns.
The decision Friday doesn't mean Coleman's ad will get on buses. The judge plans to hold another hearing in the weeks ahead.
Read previous AnnArbor.com coverage of the lawsuit: ACLU sues AATA over refusal of anti-Israel bus advertisement