Quote:
Originally Posted by Dmajackson
If you don't love roundabouts I don't recommend looking at the plans for Larry Uteck Blvd. There are five in use with at least three more planned.
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I like roundabouts - I really do!
It's just that I don't believe that they are the universal solution for every traffic intersection.
For example, I like the "dogbone" roundabout at the Harrisville Blvd/Dieppe Blvd interchange at NB Highway 15 in the eastern part of the Moncton metropolitan area. For the traffic volume it functions pretty well, although there is a definite issue for 18 wheelers going around both ends of the dogbone (turning radius is too short). This is an issue since truck traffic is pretty heavy (most direct route between the Dieppe and Caledonia industrial parks). Experienced Moncton motorists however know this, and give truckers a wide berth. Itinerant and unsuspecting tourists however might be in for a surprise.
Multilane roundabouts can be a problem since unless you know which lane you should be in, you could miss your exit. Of course, you could just go around the roundabout one more time.
Sometimes, if the majority of the traffic remains in the roundabout in order to travel to a subsequent exit point, this can prevent traffic from the first entrance to gain access to the traffic circle, resulting in traffic backing up. This can easily cause a backlog, especially at rush hour.
For example (again using the Dieppe dogbone), in the morning, there can be excessive northbound traffic on Dieppe Blvd staying in the traffic circle to exit westbound onto NB-15 to go towards downtown Moncton. This will block southbound traffic from gaining access to the traffic circle, leading to quite a back-up. This is a problem in the morning since there is also rush hour traffic trying to get to the Dieppe Industrial Park (in essence there is rush hour traffic in two directions).
Sometimes a signalized intersection is just better.
But, in general, I prefer roundabouts over signalized intersections. One just shouldn't be dogmatic about it.