Talk:3289: Highway Signs

explain xkcd: It's 'cause you're dumb.
Latest comment: 1 September by 47.150.59.231
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OK, well, my local highway department is switching to Scientific Planck units. Maybe they'd be better off with Engineering Planck units, though. JohnHawkinson (talk) 03:20, 25 August 2026 (UTC)Reply

But "1.39×1039" would fit both. 84.2.104.152 03:56, 25 August 2026 (UTC)Reply

65 meters per hour seems kind of slow 198.84.136.233 03:23, 25 August 2026 (UTC)Reply

Agreed. I tried changing m/h to mph but my edit doesn't stick. Martin (talk) 03:35, 25 August 2026 (UTC)Reply

TIL that the energy capacity of a typical gas tank is approximately the Planck energy. I'm surprised the Planck units contain a unit so useful on a human scale, most of them are so much larger or smaller than anything we typically encounter! Paul1764 (talk) 04:55, 25 August 2026 (UTC)Reply

It would be easier if the distance on the road sign was stated in binary 2a00:23c8:d78f:a401:c58e:2d00:6bb:bc9c (talk) 12:18, 25 August 2026 (UTC) (please sign your comments with ~~~~)Reply

Why the strange precision with the kilometric speed limit that's not kept for mph? 0.000000097c is indeed about 29.079868426 m/s, which converts to about 104.6875 kmh (so a rounding error too!), and it's 65.04981 mph. If you round the mph to fit with existing signage, then you should round km/h too, either to 105 (a speed limit that, to my knowledge, exists only in Canada to match the 65 mph limitation in the US) or to 100 (the international standard closest to that speed; you could also round it up to the next step, which is 110).--94.73.49.125 12:50, 25 August 2026 (UTC)Reply

Highway Unit Trivia: Delaware Route 1 is measured in miles, but exits are numbered in kilometers. Delaware Route 1 does not touch U.S. Route 1, but terminates 20 km away, leading to local confusion when people say "It's on Route One"... Which One? 158.173.67.70 15:57, 25 August 2026 (UTC)Reply

As a German Phycisist I like this unit system as it would define the speed limit on the German Autobahm as 1.

These guys should be doing it as ratios of dimensionless physical constants instead 122.58.18.202 20:01, 25 August 2026 (UTC)Reply

Title/Shop Glitch: This is the second strip posted since the title/shop glitch (?), where the comic's title links directly to the shop. Was there an error with the < / a > tag? 158.173.67.16 20:30, 25 August 2026 (UTC)Reply

For those who are metrically il-liter-ate, it would be nice to include the capacity, in gallons, of a gas tank that holds one Planck energy of chemical energy. 47.150.59.231 06:22, 27 August 2026 (UTC)Reply

Fun fact: I added many of the metric measurements on this page, without putting any of the US Customary ones on there, because I can’t be bothered to convert. However, in every single case (also with previous comics), someone comes along eventually and does add them. It feels like English Wikipedia might be the same? Problems no other wiki in any other language has. Kleinesfilmröllchen (talk) 11:16, 1 September 2026 (UTC)Reply
Thanks for adding in many of the metric measurements. And yeah, I went ahead and added the gallons in myself after my complaint (shrouded in an attempt at humor) only yielded a "fix" to that section that incorrectly changed the number of liters, while still not including gallons. Ironically the wikipedia link that was already in the explanation has the correct number of liters, and hasn't been edited since before this comic went live (at the time of this comment, at least). 47.150.59.231 16:01, 1 September 2026 (UTC)Reply