Editing Traffic warning sign (section)

=== Schools ===
[[File:Vienna Convention road sign Ab-13-V1-LHT.svg|thumb|120px|left|Vienna Convention school crossing ahead (yellow diamond, LHT version)]]

These signs mark school zones (in which lower speed limits may be in place), student crossings, crossing guards or signals ahead. In the U.S. and Canada, pentagon-shaped signs are used in place of the usual diamond-shaped signs. The shape of the U.S. school zone resembles a [[one-room schoolhouse]] and is the only U.S. sign shaped this way. Some Canadian provinces use an identical sign.