1. Draft Design Guidelines to Accommodate Peds and Bikes at Interchanges Meghan Mitman Fehr & Peers August 15, 2011

2. Background

3. Goals

4. Where does the Freeway end?

5. Leaving the Freeway, Entering a Neighborhood

6. Guiding Principles

7. On-Ramps

8. Dashed bike lane begins before on ramp lane; optional exit ramp Directional curb ramps with truncated domes, high visibility striping provided for all crosswalks Landscape buffer provided between sidewalk and bike lanes, including on the structure as feasible Crosswalk located in location with lowest speed and highest visibility Ramp geometrics minimize speed for vehicles leaving the arterial

9. HOV Lane added downstream of crosswalk

10. Bike weaving zone provided through long on-ramp

11. Advance yield limit line provided on dual lane crossing (advance stop bar if signalized). Bicyclists have option to use crosswalk (with ramps). Raised (landscaped) buffer provided between bike lane and on- ramp lanes

12. Off -Ramps

13. Ramp geometrics minimize speed for vehicles leaving the freeway. Ramp is stop controlled.

15. Optional bicycle exit ramp

16. Bike lane crossing - detail

17. In this configuration, ramps should be signalized. Bicycle detection and optional ramps accommodate bikes at the crosswalk.

18. Advance yield limit line is provided across dual lane ramp. Advance stop bar if signalized.

19. SPUIs

20. Source: FHWA 17-20 Solution: Two-step crossing (one step during vehicle phase 2 and the other during vehicle phase 3) Possible ped crosswalks Vehicle phase 1 Vehicle phase 2 Vehicle phase 3 With most SPUIs there is never a phase when pedestrians can cross the urban arterial without conflict

21. Each stage is coordinated with the downstream signal in the same direction

22. Source: FHWA 17-22 Possible ped crosswalks Vehicle phase 1 Vehicle phase 2 Vehicle phase 3 Peds with vehicle phase 2 Peds with vehicle phase 3

23. Skip Striping through Complex Intersections

24. Advance crosswalk controlled with a signal or HAWK beacon

25. Determining Crosswalk Treatments

27. Note: Spreadsheet should supplement engineering judgment and should be used in conjunction with treatment fact sheets per NCHRP Report 562. Credit: Fehr & Peers, April 2008. Version 1.02

28. Thank You! Meghan Mitman 415-384-0300 m.mitman@fehrandpeers.com

29. Design Assumptions

30. High Speeds, Poor Visibility

31. Prefer Slow Speed, Right Angle Urban Designs

32. Source: FHWA 17-32 Flat angle = wide crossing & high-speed turns Tight angle = short crossing & slow speed turns Springfield OR Old ramp alignment Positive example: reconfigured ramp terminus

33. Source: FHWA 17-33 Red line = old crosswalk Red line = old crosswalk Green line = new crosswalk Green line = new crosswalk Springfield OR

34. Savings in Land Area, Less Ped Dead Zone

35. What you dont see in this presentation… Right turn lane adjacent to shared right-thru