When SatNav was going to be radio based

I love thst their casual example is just a simple 3-4 day drive that's easily done if you know interstates

Tbf, in 1969 I-80 (which would be the majority of the interstate route between Chicago and LA) wasnt remotely finished yet. It wasnt completed until 1986, with the last stretch being finished west of SLC. So in 1969 if you wanted to drive between Chicago and LA, at multiple points you would have not been on an interstate. And most of those points would have been in major urban centers that would have been fairly complicated to navigate if you didnt know them. This hypothetical nav system would have been much easier than whipping out a national road map to figure out how to get from one finished part of the interstate to another when passing through SLC

In this thread: People who don't know what "radio" is.

All I wanted was a HUD for GPS. I'm sure they have it, but when I drove truck i couldn't find it.

I stand by, give me Bluetooth from my phone to glasses with the ability to stream hud for GPS and translation/captions and this would be moderately popular. Treat it like the visual version of Bluetooth headphones rather than something special.
I want to move from the phone as it is to it as the personal mobile computation hub it's clearly headed towards. Give me computation square that's normally kept in mobile screen but can be put in car or in motorcycle helmet or in desktop computer

Back when computers were so big and expensive, it made more sense to essentially use cloud computing rather than try to cram a nav system inside the car.

I'd buy an analog display like that. Badass retro aesthetic!

Is GPS not radio based?

I mean everything wireless is. Even a wired lightbulb can be said to emit "radio waves".... Depending on your definition.
I mean not exactly but light and radio ARE the same thing just with different frequency.
It’s satellite based. Loran-C was an old radio navigation based system
- I think the point they're making is that the satellites send radio signals.

however, fuck anyone that needs to make the 4th left. they dont deserve to drive.

/s

Also fuck anyone attempting to drive in seattle, but that's redundant given the city's road design

An antenna embedded in the road? For every intersection in the country? I can’t fathom how much that would have cost.

Most intersections already have powerlines to them, and a large number also have stop lights. The cost would be a very large number, but compared to the costs we have already spent on the intersection and getting power to it the costs is trivial.
- For this system to be practical at all, the antennas would need to be placed well ahead of the intersection or exit/entrance ramp, in order to allow drivers time to get the message and safely prepare to turn. So not at every intersection, for every intersection. Multiple times for all the directions of traffic that would need to use it.
- Most rural intersection have zero power, and if they do its solar.
  Where are you that rural intersections have power? Because it can’t be NA.

Does that display show "then second right" but the lit up arrow is 2nd left?

Turn left, then second right.
Or maybe the arrow is the first direction, and the words are the second direction to follow

This type of systems works really well for trains.

Technically if it's by radio then it's not SatNav 🙂

Technically, if its SatNav, it's by radio.
- Using lasers for satellite communication is hot new thing right now actually. Although not for navigation, lasers' advantages (bandwidth) are not relevant there.