Somehow, and kind of surprising that I had completely missed this 10 year old Part 15 story. Yeah it's an old story but I don't recall ever hearing about Allstate having radio billboards, and think it notable enough:
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Allstate’s Mayhem stars in “hyperlocal radio experiment”
July 22, 2014
Drivers stuck in traffic at Elston, Western and Diversey avenues in Chicago last week may have noticed a billboard promoting Allstate’s new ad campaign. The billboard invited viewers to tune in to 99.1 FM within a few blocks of this six-way intersection and listen to recorded snippets of Allstate’s advertising character Mayhem personifying local disasters. ...
... Schermer previously had written city-specific radio spots for Allstate, including ones for Washington and Chicago, but said that since the insurance company was based near Chicago, “we wanted to do something special for the city.” He said writing the radio spots for the intersection was easy since he lived nearby and was familiar with the local stores. The remake of Mozart’s work was composed by Chicago-based Comma Music, a music and sound agency that specializes in advertising. “We wanted to make it as local an experience as possible in this heavy traffic area. . . . People are sitting in traffic and staring at the same things every day,” Schermer said.
The billboard has since been taken down."
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Interestingly the article ended with this statement from the publisher:
"RBR-TVBR observation: While this may sound like good news for radio at first, it really isn’t (unless it was instead done with a commercial station). It’s good for Outdoor. We’re not sure if what they did here was legal with the FCC, but if so, it could have been done with one of these existing or new licenses: .... .."
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Seems he was probably right, I doubt a part 15 FM could legally cover a few blocks even in the best of conditions. But then again the part 15 FM drive-ins transmitters have always seemed to skirt those pesky part 15 FM legalities.
Also.. I thought the Allstate "Mayhem" guy was a rather new character, like maybe the last 3 years or so. Has he really been their mascot that long?