Required length of guardrails before hazards.
Tomasch E, Sinz W, Hoschopf H, Gobald M, Steffan H, Nadler B, Nadler F, Strnad B, Schneider F.
Tomasch E, et al.
Accid Anal Prev. 2011 Nov;43(6):2112-2120. doi: 10.1016/j.aap.2011.05.034. Epub 2011 Jun 21.
Accid Anal Prev. 2011.
PMID: 21819841