I know it’s a long shot, but I’m hoping the collective experience of the Straight Dope can help. Does anyone recognize the logo at the link below?
Just to keep things interesting, I believe it’s the logo of a transportation-related business, but I don’t know the mode, the date, or the country of origin. The logo was on an otherwise unmarked cardboard coaster in a box of transportation memorabilia donated to a library.
Thanks!
Tin Eye came up with absolutely nothing. 
It looks like a '70s or '80s design to me. Any clues from the other contents of the box?
It has a similar style to the Coach USA bus logo, but it doesn’t seem to be it… just similar like the same person could have designed it:
https://www.google.com/search?q=coach+usa+logo&rls=com.microsoft:en-US:IE-Address&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjqi9iR7oHWAhUDHGMKHezbC1sQ_AUICigB&biw=1347&bih=903
I’m guessing the logo either says CT or CCT and that the white arrow between the purple lines has some significance. Maybe you guys see it differently.
The library informs me that they’ve identified the logo.
It’s an old logo for the Santa Clara County Transportation Agency (now Santa Clara Valley Transportation Authority). Apparently it was the subject of a tempest in a teapot:
[QUOTE=Eugene Sakai, quoted in Charles S. McCaleb, Rails, Roads & Runways, 1994]
"Toward the end of Jim Pott’s tenure with the county, a group of engineers and architects who made a hoppy of Pott-bashing saw in the old Transportation Agency logo another opportunity to criticize the embattled director. ‘This guy’s so arrogant he made the logo out of his own initials,’ they charged.
"With enough imagination, one could indeed see a ‘JTP’ in the logo. the ‘J’ was formed by the curving leg of the logo’s ‘T,’ the ‘T’ was for ‘Transportation,’ and the ‘P’ was supposedly there, too, upside-down and formed by the inside of the loop.
“Pott had more pressing problems to deal with, but he couldn’t help trying to figure out how to defuse this argument. It came to him one day during a meeting of the supervisors. the logo actually resembled a Greek letter, a lowercase sigma, meaning ‘sum of.’ that was, of course, exactly what the Agency was involved in, a low-key summing of all the county’s transportation activities. Pott offered this and barely concealed his tounge-incheek grin when the issue dematerialized.”
[/quote]