RACT roadside and technical services general manager Darren Moody said an increasing number of its members were concerned about Tasmanian motorists failing to consider safety during the late dawn and early dusk period.

Mr Moody said yesterday that the RACT had received complaints about drivers not using their headlights 20 minutes after sunset or sunrise.

Tasmania Police confirmed that it is illegal for motorists to drive ``at night or in weather-reduced visibility conditions without head-tail-number plate lights effectively operating and visible'' and is punishable by a $140 fine and one demerit point.

``It is an ill-disciplined and unsafe approach to the driving task if your lights aren't turned on when the weather is bad, or darkness is either approaching or upon us,'' Mr Moody said.

``Headlights are a fundamental piece of safety equipment, both to see and be seen.

``At this time of the year there are a lot of overcast days, fog and wet roads where visibility is down.''

Mr Moody said cars with only one working headlight were also an issue and dangerous _ making it hard for motorists to know what was coming towards them.

He said cyclists and pedestrians must also ensure they are visible using lights and high visibility clothing both day and night.