"Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration."
A Guide for Reducing Work Zone Collisions: Guidance for Implementation of the AASHTO Strategic Highway Safety Plan
Wolshon, B. and L. Lambert, NCHRP Synthesis 340: Convertible Lanes and Roadways. ... Wolshon, B. and L. Lambert, “Reversible Lane Systems: Synthesis of Practice,” Journal of Transportation Engineering, Vol. 132, No. 12, Dec. 2006b, pp.