Resources
Links
Capacity Analysis
- Roundabout Capacity Empirical Method - John Pierce, TRL
- Rodel Summary - Mark T. Johnson
- Rodel Manual - Barry Crown
- Unequal Traffic Distribution - Barry Crown
- Rodel Capacity Background
Rodel
- Peak Hour Factors
- Rodel: Interactive Roundabout Design
Design Guides
- Draft New Chapter 3 MUTCD Roundabout Markings (please use caution when applying the design details in this draft)
- FHWA Guide
- FHWA Guide
- WIDOT Roundabout Guide
Example Plan Sets
- Marking Layout of Three Lane Roundabout
- Construction Plan Set
Safety Studies
- NCHRP Report 572
- Flannery Safety Report
- "Can Modern Roundabouts Safely Accommodate All Users?" -- Gene Russell, Kansas State
- Insurance Institute Paper on Roundabouts
- Insurance Institute Roundabout Crash Reductions
- Maryland Roundabout Safety Study
- Maryland Roundabouts
- Roundabout Accident Analysis for Truckee, CA
- Double-Lane Speed Study - FHWA
- Clearwater Report
MTJ
- Qualifications Booklet
- Landscaping Information
- Visualization Information
- Pedestrian Information