The many benefits of roundabouts
Posted in: Highways
In the correct application, roundabouts provide a myriad of benefits to roadway users. It’s easy for the public to be detracted from the fundamental improvements that roundabouts provide. New and vastly different from the intersections that we’ve been using for decades, roundabouts present a departure from how traditional intersections operate. In an age of technology, roundabouts put the control back in the hands of motorists. Using a roundabout is surprisingly simple: drivers yield at the entry, selecting a suitable gap in traffic, then proceed slowly to their destination.
From an engineering standpoint, inserting a raised circular island in an intersection makes sense. Traffic lights force drivers to come to a full stop. This causes delay and congestion, something engineers try to avoid. Yet roundabouts allow traffic to continuously move at consistent speeds. With minimized stops, vehicles can seamlessly integrate into the traffic flow.
Roundabouts also have many safety benefits. With drivers reducing speed while approaching an intersection and moving in the same direction, severe and fatal crashes can be reduced by up to 90%. The same benefits apply to pedestrians. Roundabouts create fewer points of contact between vehicles and pedestrians. Vehicles are also more likely to slow down as opposed to crossing through a traffic signal intersection at full speed.
With public interest in environmental benefits at an all-time high, roundabouts are an eco-friendly alternative compared to traffic signals. Moving a vehicle from a full stop at a traffic light takes a tremendous amount of energy. This burns unnecessary fuel and harms the environment. Allowing cars to keep moving through an intersection reduces the amount of harmful emissions. In effect, this boosts fuel efficiency in vehicles. Roundabouts make more efficient use of pavement, resulting in less roadway surface than signalized intersections. This reduces construction and long-term maintenance costs. Finally, roundabouts are aesthetically pleasing. Plants, trees and other enhancements in the center of the roundabout will create visual appeal to any locality.
While most drivers are accustomed to stoplights at their intersections, seeing a roundabout might appear confusing and difficult at first. Many drivers, though, are finding that roundabouts save time and money, and are incredibly simple to navigate.
Filter by Expertise
Drone usage takes flight in transportation industry
September 18, 2019
2019 SASHTO Conference looks inward as the industry advances
August 13, 2019
Mentoring disadvantaged businesses helps everyone
August 7, 2019
Why should training be a priority for designers?
July 25, 2019
about 16 hours ago
As our environment changes, so do our stormwater solutions. New technologies and tools are entering the scene—and t… https://t.co/QAkPDb8vpL
01:47 PM Sep 18th
We can't wait to meet our #futureleaders at the @michiganstateu career fair today! Stop by our booth to pick up so… https://t.co/aOtICxZHQy