the posted speed limit for SH29 all the way through Liberty Hill is 55mph. Local law enforcement will ticket you for 56mph. i know because i got one. the trap is most prevalent when entering Liberty Hill from the west. the speed limit sign that designates where the 55 mph zone begins is almost completely obstructed from view by some large tree branches and scrub. there is an old cemetary about 100 yards past that on the south side where law enforcement waits. this is where they got me. my advice is to pay close attention to the speed limits anywhere in Liberty Hill.