1. ROUNDABOUTING WHAT YOU NEED TO KNOW

2. Need & purpose Need - Safety
“…long delays for pedestrians, bicyclists and motorists wishing to cross the highway or for vehicles wanting to turn left onto or off of the highway. “ TSP Jan 2010
Purpose – Improve Safety
Reduce the number and severity of motor vehicle crashes at this intersection. Maintain access to businesses, residential communities, schools, lodging, commercial and industrial developments and the alternate truck route for all users of the facility (Hwy US20)

3. History & process Design Concepts Design Refinement TSP – Jan 2010
Feasibility Analysis/Workshop – Nov 2011
City Requests Funding thru STIP for Roundabout
Funding/STIP/Public Stakeholder Process – 2011 to Present
Freight Concurrence on Sizing – Apr 2015
City/ODOT Agreement on Design Concept
Construction Winter 2017
Design
Concepts
Design Refinement

4. 1. Reduced wait time 2. Improved safety
How does a roundabout compare to a signal? Year of Opening (2017) Average Delay/Vehicle
1. Reduced wait time
CONVERTED TO
~ 15.2s
~13.9 s
2. Improved safety
CONVERTED TO
78% < in injuries
48% < total crashes

5. Roundabouts reduce crashes
Over 90% reduction in fatalities
76% reduction in injuries
35% reduction in total crashes
Very little reported pedestrian and bicycle crash experience
* NCHRP Report 572
Photo: Lee Rodegerdts

6. Roundabouts: improving intersection safety

7. navigating the roundabout

8. To Salem Extension of existing path Connection to existing sidewalk
Single-stage crossings on all approaches
Future art
~ 2018
To Salem
Connection to existing path
Truck bypass/ widening of existing path
Extension of existing path

9. Navigating the roundabout
Four things to remember when
driving a roundabout.
Slow down when approaching a roundabout.
Circulate counter-clockwise around the circle.
Yield to traffic in the roundabout. Vehicles in the roundabout have the right-of-way.
Do not stop within the circular portion of the roundabout.
Signs you might see.
The yield sign tells drivers to yield to traffic already in the roundabout.
Drivers should keep right of the center median when entering a roundabout.
Roundabouts are designed for speeds between 15 to 25 mph.
Drivers should look for pedestrians in marked crossings before entering or exiting a roundabout.

10. Summary Why roundabouts? Roundabout will be designed for…
Safer for all users
Lower peak hour and off-peak delay
Community gateway opportunities
Roundabout will be designed for…
Passenger vehicles
Pedestrians
Bicyclists
Freight