4 ms·
The US interstate speed limits are at most 120 kph (75 mph) and are 105 kph on average (65 mph), and can be as low as 90 kph (55 mph), so that's almost certainl
by Teknoman117 5y ago
The US interstate speed limits are at most 120 kph (75 mph) and are 105 kph on average (65 mph), and can be as low as 90 kph (55 mph), so that's almost certainly what Tesla bases their "highway" estimates off of.
160 kph+ (100 mph+) is way past the efficiency sweet spot :)
US interstate speed limits have their roots in fuel conservation for WW2 (or noise control in wealthier spots), safety was just a side effect at least at first.
- SECProto 5y ago> The US interstate speed limits are at most 120 kph (75 mph) Minor nitpick: there are 80 and 85mph interstates/sections.
- Teknoman117 5y agoReally?? Where? I've lived in a few different states across the US and I've yet to happen across one. (I am an American, yes we all learn metric in school, you can blame Reagan canning the attempt to switch in the 80s) Edit: https://upload.wikimedia.org/wikipedia/commons/thumb/c/c3/US_Speed_Limits.svg/1920px-US_Speed_Limits.svg.png https://upload.wikimedia.org/wikipedia/commons/thumb/c/c3/US... I've not spent much time in any of the dark-green ones (or the blue bit), so that's why.
- vondur 5y agoI've seen them in Utah in more rural sections of I-15.