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Old 07-12-2016, 09:36 AM
 
7,742 posts, read 15,040,093 times
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Quote:
Originally Posted by 10scoachrick View Post
Who is going to "let" people into the lane? Better yet, who is going to "prevent" people from entering the toll lane? NATURALLY fall to what level? Why? If the first car is going 65 or 75 mph, why wouldn't the vehicles behind go at the same speed?

IF you think Johnny Tesla gets mad now when he is blocked in the left expressway lane, just wait until he is held to 50mph in a lane he is paying EXTRA to cruise in


Whole lot of theory here...not a whole lot of real world traffic.
they will use variable rate pricing to control the number of people. It works.
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Old 07-12-2016, 09:45 AM
 
Location: Austin, TX
12,059 posts, read 13,786,167 times
Reputation: 7256
Quote:
Originally Posted by 10scoachrick View Post
What fancy force field or magnet are they going to use to control the speed of the 'expensive' lane to below 65? Why would I drive below the 'normal' speed limit if I'm in the privileged lane? I ain't drivin' no setpoint and ain't never seen one of them newfangled algo-rythmns.

I'm betting this is a theory about to be disproved.
The "trick" is called lowering the price until the lane is crowded enough where you can only go 50 MPH and if you go faster you would tailgate the car in front of you. If the speed decreases to 45 MPH then they would increase the price until the speed goes up.

The caveat is if the price is the lowest it can get. So yes at 2 AM it will be possible to speed in this lane. However, watch out for cops, they'll be thinking you had a little too much at the bar.
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Old 07-12-2016, 10:42 AM
 
145 posts, read 172,056 times
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Quote:
Originally Posted by Austin97 View Post
they will use variable rate pricing to control the number of people. It works.
Variable rate pricing works if the price is so high that people won't pay it. Will that happen in Austin?
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Old 07-12-2016, 10:55 AM
 
2,602 posts, read 2,961,116 times
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Quote:
Originally Posted by Nacho_Friend View Post
Variable rate pricing works if the price is so high that people won't pay it. Will that happen in Austin?
They've said there's no upper limit. I'll go out on a limb and say that if it reaches $15 one way, most people will stop paying it.
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Old 07-12-2016, 02:50 PM
 
Location: home
1,235 posts, read 1,521,879 times
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Quote:
Originally Posted by Novacek View Post
They've said there's no upper limit. I'll go out on a limb and say that if it reaches $15 one way, most people will stop paying it.


Imagine if they did that for I-35. Oh glorious day.
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Old 07-12-2016, 04:01 PM
 
Location: Austin, TX
12,059 posts, read 13,786,167 times
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Quote:
Originally Posted by sojourner77 View Post
Imagine if they did that for I-35. Oh glorious day.
Then they wouldn't need Circuit of Americas. Race the F1 cars right down I-35!
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Old 07-13-2016, 12:22 AM
 
Location: Avery Ranch, Austin, TX
8,977 posts, read 17,449,279 times
Reputation: 4000
Quote:
Originally Posted by Austin97 View Post
they will use variable rate pricing to control the number of people. It works.
Quote:
Originally Posted by cBach View Post
The "trick" is called lowering the price until the lane is crowded enough where you can only go 50 MPH and if you go faster you would tailgate the car in front of you. If the speed decreases to 45 MPH then they would increase the price until the speed goes up.

The caveat is if the price is the lowest it can get. So yes at 2 AM it will be possible to speed in this lane. However, watch out for cops, they'll be thinking you had a little too much at the bar.
More theory, not driving. There is no "switch" that will add or remove vehicles based on cost. That assumes some sort of instantaneous absolute reaction to price changes...not likely to happen. If 1000 vehicles are lined up in the toll lane NOW, how will changing the price of the lane NOW cause them to do ANYthing?

It's like the pat answer "Supply and demand" heard so often here. No allowance for elasticity of demand, personal choice, stupidity, arrogance, or any number of other factors that weigh in on peoples' behavior. The price of ANYthing could be zero and not everyone is going to 'bite' based strictly on price, especially a variable price.
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Old 07-13-2016, 08:06 AM
 
2,602 posts, read 2,961,116 times
Reputation: 997
Quote:
Originally Posted by 10scoachrick View Post
More theory, not driving.
It's not theory, it's practice. These are not the first variable toll lanes every constructed.

Quote:
Originally Posted by 10scoachrick View Post
There is no "switch" that will add or remove vehicles based on cost. That assumes some sort of instantaneous absolute reaction to price changes...not likely to happen. If 1000 vehicles are lined up in the toll lane NOW, how will changing the price of the lane NOW cause them to do ANYthing?
There will never be 1000 vehicles in the toll lanes.

At peak I believe they were projecting ~1600 vehicles per hour

The price will change long before then.

After the first 10 vehicles, potentially, then after the next 10, and so on.


Quote:
Originally Posted by 10scoachrick View Post
It's like the pat answer "Supply and demand" heard so often here. No allowance for elasticity of demand, personal choice, stupidity, arrogance, or any number of other factors that weigh in on peoples' behavior.
The allowance is the law of large numbers.

Yes, all those factors weigh on individuals, but over a large enough population they average out to a predictable behavior.
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