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Benefits of a Roundabout
Saves lives
Up to a 90% reduction in fatalities
76% reduction in injury crashes
30-40% reduction in pedestrian crashes
75% fewer conflict points than four-way intersections
Slower vehicle speeds (generally under 25 mph)
Motorists have more time to judge and react to other cars or pedestrians
Advantageous to older and novice motorists
Reduces the severity of crashes
Keeps pedestrians safer
Efficient traffic flow
• 30-50% increase in traffic capacity
Reduction in pollution and fuel use
Improved traffic flow for intersections that handle a high number of left turns
Reduced need for storage lanes
Potential money saved
No signal equipment to install and repair
Savings estimated at an average of $5,000 per year in electricity and maintenance costs
Service life of a roundabout is 25 years
(vs. the 10-year service life of signal equipment)
Community benefits
Traffic calming
Aesthetic landscaping
Source: Federal Highway Administration
What is a Roundabout?
A roundabout is a circular intersection without traffic signal equipment in which traffic flows around a center island.
Why Modern Roundabouts?
In Florida, over 44% of all traffic fatalities and serious injuries occur at conventional (stop & signal-controlled) intersections. Roundabouts have been proven to reduce the number of fatal and severe injury crashes by 82% over a stop-controlled intersection, and 78% over a signalized intersection.
Conventional intersections have 32 vehicle and 16 pedestrian conflict points, while roundabouts have only 8 vehicle and 8 pedestrian conflict points. Because there are no crossing movements in a roundabout, left-turn and right-angle crashes are eliminated.
For safety tips and more information, please visit:
www.AlertTodayFlorida.com
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Navigating a Modern Roundabout
Yield right-of-way to motorists already in the circulatory roadway when it is safe to do so
Slow to 10-15 mph on approach to a roundabout
In multi-lane roundabouts, follow signs and markings to determine the lane(s) that will serve your destination
Turn right onto the circulatory roadway when it is safe to do so
Yield right-of-way to bicyclists merging into the envy lane before the bike lane ends 7. When you approach your destination street, use right-turn signal and exit the roundabout
Yield right-of-way to pedestrians crossing the entry lane
Yield right-of-way to motorists already in the circulatory roadway when it is safe to do so
Yield right-of-way to pedestrians crossing the exit lane
Roundabout User Tips
Motorists
Determine which way you want to go in advance of the roundabout
Keep right at the splitter island and slow to 10-15 mph
Watch for bicyclists and allow them to merge into the entry lane
Watch for pedestrians crossing the entry roadway and yield right-of-way
Yield right-of-way to vehicles within the circulatory roadway
Pedestrians
Stay on the walkways and cross at designated cross-walks
Do not enter the central island
Watch for motorists and bicyclists
Bicyclists
Merge with traffic on the entry lane or use the ramp to the sidewalk
If riding with traffic, signal your intended path
If using the sidewalks, yield right-of-way to pedestrians and walk your bicycle at crosswalks
Yield right-of-way to vehicles within the circulatory roadway
Turn right onto the circulatory roadway when it is safe to do so
When you approach your street, use your right-turn signal and exit the round-about
Watch for pedestrians crossing the exit roadway and yield right-of-way
Watch for motorists and bicyclists
Cross to the splitter island and stop there if traffic requires
If using the sidewalks, yield right-of-way to pedestrians and walk your bicycle at crosswalks
All roundabouts have these features:
Yield-at-entry
Traffic entering the circle yields to traffic already in the circle.
Traffic deflection
• Pavement markings and raised islands direct traffic into a one-way counterclockwise flow.
Geometric curvature
• The radius of the circular road and the angles of entry can be designed to slow the speed of vehicles.