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Research Digest FORWARD ALL REQUESTS TO: The University of Texas at Austin Center for Transportation Research LIBRARY 3208 Red River • Suite 115 • Austin • Texas • 78705-2650 Phones: (512) 232-3126 and (512) 232-3138 • Fax: (512) 232-3088 Email: ctrlib@austin.utexas.edu

In this Issue: TxDOT Reports

Table of Contents Item 1. Aggregate Distribution Investigation in Box Beams Fabricated with Self Consolidating Concrete (CTR 5197-01-1) ........................................................................................................................................... 1 Item 2. Evaluation of MEPDG with TxDOT Rigid Pavement Database (CTR 5445-3) .............................. 2 Item 3. Arterial Intelligent Transportation Systems -- Infrastructure Elements and Traveler Information Requirements (CTR 5865-1) ......................................................................................................................... 3 Item 4. Feasibility of Speed Harmonization and Peak Period Shoulder Use to Manage Urban Freeway Congestion (CTR 5913-1) ............................................................................................................................. 3 Item 5. Effects of Wet Mat Curing Time and Earlier Loading on Long-Term Durability of Bridge Decks: Compressive Strength, Maturity and Strength Durability Index (SDI) (TechMRT 2116-4A) ...................... 4 Item 6. Study of Elastometric Bearings for Superelevated U-Beam Bridges (TechMRT 5834-1) ............... 4 Item 7. Culvert Rating Guide (TechMRT 5849-P1) ..................................................................................... 5 Item 8. Rubblization and Base Overlay of FM 912 and FM 1155 (TTI 4687-01-1 ) .................................. 5 Item 9. Roadway Safety Design: An Engineer's Guide to Evaluating the Safety of Design Alternatives (TTI 4703-01-P3) .......................................................................................................................................... 5 Item 10. Laboratory and Field Evaluation of Concrete Paving Curing Effectiveness (TTI 5106-3)............ 6 Item 11. NCHRP Report 350 Crash Testing and Evaluation of the S-Square Mailbox System (TTI 5210-7) .................................................................................................................................................. 6 Item 12. Guidance on Mitigating the Impacts of Large Distribution Centers on Texas Highways (TTI 5335-1) .................................................................................................................................................. 7 Item 13. Workshops on Using the GPS Method to Determine Curve Advisory Speeds (TTI 5439-01-1) . 7 Item 14. Revised Text for TxDOT Manual Procedures for Establishing Speed Zones, Chapter 5, Section 2 (TTI 5439-01-P2) ....................................................................................................................................... 8 Item 15. Design, Construction, and Performance Monitoring of the Very Thin Overlay Placed on Bus 59 in the Lufkin District (TTI 5598-01-2).......................................................................................................... 8 Item 16. Development of Guidelines for Cable Median Barrier Systems in Texas (TTI 5609-2) ............... 9 Item 17. Video over IP Design Guidebook (TTI 5942-P1) .......................................................................... 9 Item 18. Long-Term Performance of GFRP Reinforcement: Technical Report (TTI 6069-1) ................. 10 Research and Technology Implementation Office March 2010


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