Sometimes, but not all the time. For example, you can't where:
- there's a sign directing to the effect that there's no stopping;
- you're on a signed clearway, unless your're a bus, taxi, or dropping off/picking up passengers;
- you're on a freeway, unless: you're in an emergency stopping lane, there's a valid reason for stopping in the interests of safety (eg breakdown, driver condition), and you stop for no longer than is necessary for the circumstances.