Check out the Friday November 7, 2008 blog and picture at http://www.grpg.org/Blog.shtml for information on GRPG's improved trail navigation.
In that blog it describes how San Jose's Department of Transportation added striping to help lead people in the right direction.
The Friends of GRPG, http://www.grpg.org/, is one of SVBC's partner organization that provides community leadership for the development and active use of the Guadalupe River Park & Gardens through education, advocacy and stewardship.