While many drivers are aware of the dangers of driving too fast, some don’t see the harm in driving too slowly. While you're more than likely to gain the ire of drivers behind you, remember that driving under the speed limit is legally fine, but driving excessively slowly can land you in a bit of hot water.
According to the NSW Road Rules you cannot drive so abnormally slowly that you cause an obstruction. An example of driving ‘abnormally slowly’ would be if you were travelling at a speed of 20 kilometres per hour on a road with a speed limit of 80 kilometres per hour. As a result, you could be causing an obstruction to other drivers and carries a fine of up to $289.
However, the road rules are full of nuances and there are numerous circumstances in which Road Rule 125 might not be applicable due to the 2b clause. In each of these three example circumstances, for example, it would likely be considered reasonable that the road user is travelling below the posted speed limit:
- A driver might be driving slowly during heavy rain/snow, or in heavy fog, but this is at the discretion of the driver and what they judge to be a safe speed given the visibility/control constraints,
- A heavy vehicle ascending or descending a hill. It might be travelling well below a posted speed limit, but this is because that is the capability of the vehicle in question, similarly,
- A cyclist travelling on any road might be travelling below a posted speed limit, but this is dependent on the capability of the cyclist in question.