Motorway entrance sign, Queensland. This sign denotes the entrance to the motorway, but also calls attention to the fact that some vehicles are prohibited from the motorway. Over time the Queensland government has been building bicycle lanes along the motorways, and so this sign has been modified (with a piece of metal riveted over it) to no longer exclude bicycles or pedestrians (or possibly mopeds).
<a href="//commons.wikimedia.org/wiki/User:Cybergothiche" title="User:Cybergothiche">Cybergothiche</a>
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<span class="int-own-work" lang="en">Own work</span>