These answers were recorded from each table submitting ideas, and recorded for the group

As a profession, what don’t we know (or know enough about) in regard to good planning, designing, constructing roundabouts or roundabout operation? (Your top 3)

• Current methodologies in comparing traditional intersections to roundabouts – state statutes work against roundabouts
• Capacity volumes for design year and how to evaluate growth rates – consider ranges and interim fixes at roundabouts
• Bicycle accommodation at roundabouts – jury is still out on best approaches; when to provide bicycle paths, multi-use paths, interaction with pedestrians.
• Multi-lane roundabouts and truck behavior – how to stripe, what paint markings to use; paint markings sometimes used to compensate for geometric elements.
• How do we as roundabout professionals become advisors to emergency response, policy makers, etc. rather than just roundabout advocates?
• Better education not just for drivers but engineers, designers, and review agencies. Need for more information, education, and public relations at all levels.
• Two populations of cyclists – commuters used to riding on the street and others who are more comfortable along the sidewalk.
• Capacity calibration – recognize that we have 1 capacity relationship for single-lane and 1 for each lane of 2-lane roundabouts. Need understanding of the ranges of capacities.
• Modeling guidance – there are many tools available but limited guidance for inexperienced modelers.
• Build-in vs. build-out?
• Driver behavior – study that roundabouts force drivers to pay attention.
• Be able to show speeds in simulation models.
• Central island landscaping and safety.
• Asphalt vs. concrete and maintenance issues.
• Distance of ramp meters and effects.
• Challenges to getting roundabouts approved is public perception. Need tools to convince public roundabouts can be good solution.
• Lack of data, 3-lane roundabouts with minimal science and experience.
• Entries and exits for pedestrians and cyclists.
• Accommodating visually impaired at roundabouts.
• Understand downstream effects of metering that occurs at roundabouts and what can be done to mitigate those effects.
•  
• Winter maintenance, road maintenance.
• Better design for older people (drivers, pedestrians)
• Value engineering
• Communicate difference between traffic circles and roundabouts.
• Education about roundabouts from very young age (e.g., roundabout coloring book).
• Spot treatments and improvement funds – for initial implementation of a roundabout and effects of surrounding area – how to approach this when funding is specific to spot treatments only.
• Need tool for enforcement partners so they can identify faults for collisions at roundabouts.

2. What research or studies do we need to find out?

Considering roundabout growth and promotion in the USA, what general approach or type of effort do we need more of; for example, education, research, case studies, conferences, etc.? Pick your top 1 or 2 and give some specific examples or ideas.

• Driver simulators to educate public
• Driver education in schools
• Developing advocates outside of engineering community
• Champion for roundabouts (esp. political champion) and trying to educate them
• Conference every 2 years instead of every 3 years
• Get together with other organizations (APA, APWA, etc.)
• Creation of template that can be adapted to local examples and present to specific partners for outreach
• Better/more media coverage and publicity
• Large-scale example at public meetings (e.g., parking lot setup)
• Research / outreach – work with vendor to develop a video game to set up at state or county fairs for public.
• Case studies of roundabouts that need improvements and an online database of mitigation projects.
• Better sharing of information between designers, contractors, landscapers, etc.
• Federal education initiative and national standard for campaigns and policies.
• Legislation for yielding at roundabouts uniform at local levels. 
• Need senior technical advisor to take strong positive stand on roundabouts as an option.
• Need for further education with 2-lane approaches. Need marketing campaign to public, driver education classes. Lego roundabouts; psychology to change perception and behaviors.
• Fix rotaries and poorly performing circulating intersections to help public perception.
• More outreach to natural allies with shared interests (environmentalists, APA, public officials, etc.)
• Research and outreach with different groups – mutually beneficial (AARP, bicycle groups) – use them as allies.
• Large trucks – DOTs need higher confidence level that roundabouts can handle the large vehicles. More media success stories focused on large trucks, especially in rural areas.
• Funding mechanisms (FHWA) for local and county agencies – funding discussion focuses on non-roundabout options.
• In new locations, start with 1-lane roundabouts to build confidence.
• Need an app for a roundabout simulator.
• Utilize social media.
• Education is the biggest issue – decision-makers, drivers ed, use simulators; don’t forget the everyday driver.
• Peer-to-peer exchanges between jurisdictions.
• Get DOTs onboard through Users Groups or Task Forces
• Municipal level – put into policy for TIAs and other traffic studies that roundabouts be considered.
• Education with the media – get them onboard with roundabouts.
• Work directly with trucking industry to educate them – how to navigate roundabouts and get feedback from them so we can improve and accommodate their needs better.