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Submission + - The Feds' Font Flip-Flop (citylab.com)

McGruber writes: Citylab has the news that the U.S. Federal Highway Administration is revoking its 2004 approval of the "Clearview" font for road signs.

Clearview was made to improve upon its predecessor, a 1940s font called Highway Gothic. Certain letters appeared to pose visibility problems, especially those with tight interstices (or internal spacing)—namely lowercase e, a, and s. At night, any of these reflective letters might appear to be a lowercase o in the glare of headlights. By opening up these letterforms, and mixing lowercase and uppercase styles, Clearview aimed to improve how these reflective highway signs read.

Now, just 12 years later, the FHWA is reversing itself: “After more than a decade of analysis, we learned—among other things—that Clearview actually compromises the legibility of signs in negative-contrast color orientations, such as those with black letters on white or yellow backgrounds like Speed Limit and Warning signs,” said Doug Hecox, a FHWA spokesperson, in an email.

The FHWA has not yet provided any research on Clearview that disproves the early claims about the font’s benefits. But there is at least one factor that clearly distinguishes it from Highway Gothic: cost. Jurisdictions that adopt Clearview must purchase a standard license for type, a one-time charge of between $175 (for one font) and $795 (for the full 13-font typeface family) and up, depending on the number of workstations.

Comment Re:Round and round (Score 2) 55

Yes. Assuming it has the correct algorithm and the three remaining motors can thrust enough to compensate for the additional load. (if not, maybe the quad could at least slowly descend vs a total crash)
Flying machines arena demonstrated this a while back, here's a video

A six prop arranged coaxially (referred to as a Y6) can, so long as the failed motor doesn't take out the other motor attached to the same arm. And I'm sure the algorithm for the quad can be applied to a hexacopter, allowing autorotation for a controlled decent. The real question is how much power the remaining good motors can produce, and I suspect the answer to that is "not enough"

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