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General >> Rally >> Roundabout vs 4-way stop
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Message started by Robert Roaldi on 10/07/13 at 13:49:28

Title: Roundabout vs 4-way stop
Post by Robert Roaldi on 10/07/13 at 13:49:28

http://www.wimp.com/testroundabout/

Title: Re: Roundabout vs 4-way stop
Post by gully on 10/07/13 at 16:28:22

A predictable result. However one MAJOR factor was not included cost!!!

Peterborough is going to install two Roundabouts over next couple of years. One of them a complete waste of $$$ in my opinion as traffic from two directions is neligible. However I am just a citizan whose money will be spent. Cost of these roundabouts about a million dollers each and months of contstruction. On the other hand fourway stops could be installed in probably one day maybe a couple more if a flashing Red is installed over road. Cost I would estimate as around fifty grand each. Oh well the Traffic Engineers must be right

Title: Re: Roundabout vs 4-way stop
Post by Dave Cotie on 10/07/13 at 17:54:11

Traffic engineers rate intersections on the ability for an approaching car to pass through without stopping - Efficiency Rate 0-1.0

Roundabouts ER - 0.67
Signalized Intersection ER - 0.32
All-way Stop ER - 0.0

I was a huge doubter until the City put one in less than a mile from the College I work at. Sure some idiots turn into them the wrong way, but collisions are avoided because you have to slow down (although it is fun to throw the WRX in and see how little you have to slow ;D). You will get a few older drivers that get in them and just stop - they get confused and lock-up!

The other reality is that a T-bone or head-on collision is almost impossible in a roundabout.

Title: Re: Roundabout vs 4-way stop
Post by KDeV on 10/08/13 at 15:37:36

After using them in the Kitchener-Waterloo area, then Kingston and in Trenton I'm a fan (most times). If placed in the right location they can and do improve traffic flow substantially.

Pete, I've thought hiway 28 and Douro road would be a good place since every weekend in the summer that place is backed up halfway to Lakefield

Title: Re: Roundabout vs 4-way stop
Post by Robert Roaldi on 10/09/13 at 21:23:39

gully wrote on 10/07/13 at 16:28:22:

I hear ya, but you should really also take into account the cost of the wasted time on the part of countless thousands of drivers for years to come that is going to be saved. It may be that city planners have in mind changes that will increase traffic flow there, you never know. Also, they're fun. :)