1. Lessons Learned from a chip seal debacle
Lea Brooks
Bike SLO County Advocate

3. Highway 1 – Ragged Point

4. Unstable Surface = Bumpy Ride!

5. True Grit = Ouch!

6. Slab Town Rollers: Our Heroes

10. UC California Pavement Research Center Study

11. Figure 3.7: Extract of bicycle speed with corresponding acceleration data on Section 5 of Mon-198. (Note:  the red line with circles shows speed (mph), the blue line shows acceleration (g ), and the green line shows the test section portion used for analysis where speed > 5 mph.) UCPRC staff conducted test rides on local roads near Davis, California, to evaluate the instrumentation system and develop the data analysis procedure before using it for this study. A list of bicycle vibration evaluations on
the Phase 1 sections is shown in Table 3.7. The testing conducted on July 12 and 13, 2013, allowed evaluation of bicycle vibration on various pavement surfaces, while the testing conducted on July 23, 2013, allowed evaluation of the effects of speed and tire pressure on bicycle vibration.

12. Pneumatic Roller

13. Sand & Oil Treatment

14. Sand & Oil Treatment

15. Before After
COST: $3.3 million! Original chip seal treatment: $2.1 million Sand Seal Fix: $1.3 million

16. Realignment: The Road & Relationships

19. Highway 1 Rumble Strips

20. Pfeiffer Canyon Bridge - Big Sur

21. “Paul’s Slide” north of Limekiln in Big Sur

22. Resources
Surface Treatment Macrotexture and Bicycle Ride Quality, University of California Pavement Research Center, UC Davis, UC Berkeley,
Caltrans Standard Specifications _StdSpecs/2015_StdSpecs.pdf Chip Seal Treatments are in Section 37 Caltrans contact: Tom Pyle, ‎Chief, Office of Pavement Management, Sacramento
Lea Brooks, Bike SLO County Advocate: