College Station Roundabout Policy

College Station Roundabout Policy

1. College Station Roundabout Policy February 14, 2019 Troy Rother, PE, PTOE City Traffic Engineer

2. Channelized Approaches What is a Roundabout?

3. Channelized Approaches Geometric Curvature to ensure lower travel speeds ( less than 25 mph ). What is a Roundabout?

4. Channelized approaches Geometric c urvature to ensure lower travel speeds ( less than 25 mph ). Yield controlled e ntries What is a Roundabout?

5. Roundabout Safety Fewer Conflict Points for vehicles 32 vs 8

6. Roundabout Safety Less Conflict Points for pedestrians 16 vs 8

7. Roundabout Safety Chance of Pedestrian Fatality at Various Automobile Travel Speeds Reduced Speeds

8. Roundabout Safety Chance of Pedestrian Fatality at Various Automobile Travel Speeds Reduced Speeds Desired Speed at Roundabouts

9. Roundabout Safety Carmel, Indiana Safety Carmel, IN

10. Roundabout Safety Collision Reductions

11. Roundabout Safety No “light to beat” One-way operation Reduce delay Less expensive vs traffic signal

12. Roundabout Safety No “light to beat” One-way operation Reduce delay Less expensive vs traffic signal New construction Roundabout: $400,000 Signalized intersection: $570,000 ($275,000 signal, $195,000 pavement, and $100,000 lifetime maintenance)

13. Roundabout ROW

14. Recommended Principles Preferred intersection Vs. Signals and Multi-way Stop Signs Used on Collector and Local streets Design of Roundabouts FHWA 672: Roundabout Design Guidelines (Federal Highway Administration) Develop standards for the BCS Unified Design Guidelines Reviewed by City or City’s consultant/3 rd p arty review Engineering analysis for another option ROW for a future roundabout

15. Policy Recommendations For staff to develop a roundabout policy based on these recommended principals, to be approved and implemented by the City Manager or his designee.