No waiting signs allow a motorist to stop – to drop off or pick up a passenger for example. Any longer period of time can be defined as waiting and is therefore a prohibition.
Clearway, or no stopping signs do not always have road markings to accompany them such as on a rural road for example. A Clearway sign indicating a 24 hour no stopping restriction may or may not have words accompanying the sign on the same plate or a separate white plate.