Click Here for Main Menu


Welcome to the NCHRP 3-54 Research Project Web Site. This site has been created and maintained to foster and disseminate information and ideas on the protected-permitted left-turn, or simply PPLT.

Learn About the Flashing Yellow Arrow

Research Documents

Graphics and Animated Files

For comments or questions regarding this web site, please contact Chris Brehmer.

Copyright 2001 by Kittelson & Associates, Inc. All rights reserved.
Reproduction for commercial use in whole or in part without permission is prohibited.

This site hosted by:
DigiWest Internet Services