What's a turnout?
Turn outs are wide spots created on a road that slower traffic could use to allow the parade behind them to pass but they ignore them to frustrate the drivers behind. Passing lanes are a similar device. As a slow moving vehicle that is holding up traffic enters a passing lane they stay in the left lane and floor it until the passing lane ends at which point they slow to some mind numbing pace again. At least that is how the asshats in SoCal do it.Everywhere. All the time. Every single one of them.
It appears that a turnout is a short additional leg where slow vehicles can divert, allowing following vehicles to pass, and then the slow guy can re-enter the highway.
In some places it's obligatory to take a turnout if you have some number of vehicles trapped behind you.
Unfortunately, a 'slow vehicle' is defined as one going under the speed limit.
... it's kinda funny.
Had this idea for years and finally had Fast Signs make it for me. Yes I know, when you're on a Konnie a double yellow is more if a suggestion and waiting for turn-outs isn't nessecary but I couldn't help myself.
Ah, a slow moving vehicle lane, I got it now. I don't know why it's called a turnout though.
Well technically a turnout isn't a passing/slow moving lane. It's pretty much a wide spot in the road made specifically for letting slower vehicles pull in and stop for scenic views or letting faster vehicles pass. It requires one to turn into it and stop (TURN in and OUT of traffic) or slow to a creep. National parks are usually full of them. It's unfortunate that many are so small that even if the vehicle ahead of you is willing to use it, that they slow to an even more slow speed to turn into it. They usually decide to do this at the last second so it can catch you off guard. Unfortunately some turnouts are gravel instead of paved. The gravel ones usually require an even slower entry speed and then have gravel on the road at their exit.
http://www.merriam-webster.com/dictionary/turnout
Well technically a turnout isn't a passing/slow moving lane. It's pretty much a wide spot in the road made specifically for letting slower vehicles pull in and stop for scenic views or letting faster vehicles pass. It requires one to turn into it and stop (TURN in and OUT of traffic) or slow to a creep. National parks are usually full of them. It's unfortunate that many are so small that even if the vehicle ahead of you is willing to use it, that they slow to an even more slow speed to turn into it. They usually decide to do this at the last second so it can catch you off guard. Unfortunately some turnouts are gravel instead of paved. The gravel ones usually require an even slower entry speed and then have gravel on the road at their exit.
http://www.merriam-webster.com/dictionary/turnout