Transportation Research Record contains the following papers: Evaluation of portable concrete barriers using finite element simulation (Marzougi, D, Bahouth, G, Eskandarian, A, Meczkowski and Taylor, H); Impact performance of the G4(1W) and G4(2W) guardrail systems : comparison under NCHRP report 350 test 3-11 conditions (Plaxico, CA, Ray, MH and Hiranmayee, K); Long-span guardrail system for culvert applications (Faller, RK, Sicking, DL, Polivka, KA, Rohde, JR and Bielenberg, BW); Transitions from guardrail to bridge rail that meet safety performance requirements (Buth, CE, Menges, WL, and Bligh, RP); Performance of breakaway cable and modified eccentric loader terminals in Iowa and North Carolina : in-service evaluation (Ray, MH and Hopp, JA); Safety effectiveness of upgrading guardrail terminals to NCHRP reports 350 standards (Ray, MH); Design and development of steel breakaway posts (Sicking, DL, Rohde, JR and Reid, JD); Evaluating human risk in side impact collisions with roadside objects (Ray, MH and Hiranmayee, K); In-service, performance-based roadside design policy : preliminary insights from Washington State's bridge rail study (Shankar, VN, Albin, RB, Milton, JC and Nebergall, M); Test level 4 bridge rails (Buth, CE, Menges, WL and Williams, WF); Estimation of time of concentration for Maryland streams (Thomas, WO, Monde, MC and Davis, SR); Temporal variations in heavy metal partitioning and loading in urban highway pavement sheet flow : implications for in situ treatment design (Sansalone, JJ and Glenn, DW); California Department of Transportation statewide storm water management program (Johnston, J, Yamaguchi, H and Frankel, A).