Monday, March 21, 2011

Do you support the introduction of new roundabouts?

Our cousins 06blog have faced in recent days, the subject of roundabouts, examining in particular the situation of Roma so willing to obey the law of the jungle where the strongest or the fastest will retain the right of priority. Highway Code in hand, remember that the roundabout (or traffic circle, or roundabout) can be defined as a one-way loop that is built around a median of more or less circular.

This intersection has a great peculiarity: there is no one under the existing Security Council that regulates the manner of travel. It is therefore appropriate to stick to generic items 143, 144 and 145, which define the position of vehicles on the road, running parallel rows, and of course the "distribution" of the above.

As every junction should give way to the right, but such proves totally impractical and harmful: those who cross the roundabout can not let it stop and transit vehicles being entered. It was therefore decided to invalidate this rule by putting signs to "give priority" for those entering the roundabout, in order to smooth the motion.

When a vehicle enters the roundabout must always maintain the right position in the lane closest to the free margin Street. If they had more than one lane is allowed to march parallel lines and move from one lane to another, provided that the intention is reported through the appropriate use of side markers.

That's the theory, the case of the correct drive. Then there is the practice, the confusion, the pathos in addressing a roundabout during rush hour. But back to the numbers, without the joke ("The priority is who gets angry") of the comic Gioli Dix influence judgments about the intersection clearly advantageous to reduce road collisions.

According to a study conducted by the American Status Report, a decrease of 40% roundabout collisions between vehicles, 80% of personal injury and 90% fatal and serious damage, and in addition leads to a reduction of 80% interferences between directions. This is because, as Mark writes in his book De Mitri The problem with this city is the traffic, "in a cross with 4 arms the points of conflict between vehicles is 24.

In a roundabout with 4 branches are 8 points of conflict. " On certain occasions the reluctance is well justified, especially when the roundabout is crossed by a lane for taxis and trams. In this case, the passage of public transport, the flow of vehicles in transit is regulated by more traffic lights and traffic offenders to increase confusion.

Little immediate also crossing for cyclists and pedestrians, but this problem can be solved by installing the appropriate divider in the gap between entry and exit from the roundabout. We exhibited strengths and weaknesses. Now we ask you your opinion. Do you support or not the construction of new roundabouts? And more, what is the busiest roundabout you have never met?

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