That's the view of chairman Scott Tilyard, whose comments follow a double fatality at Penna in the state's south on Tuesday and the death of 16-year-old Bailey Seabourne on Monday near Devonport Airport.

When asked whether the messages were doing their job, Mr Tilyard said the council would continue to repeat the messaging to reinforce their points.

"Most road users are sensible, responsible people who do the right thing most of the time," he said.

"Unfortunately, there are some people out there that don't seem to get the message.

"I think sometimes people just switch off.

"They've heard the messages many times, driving is something a lot of people do every day so they take it for granted and they don't necessarily think about the inherent risks.

"We've all witnessed acts of bad driving or irresponsible and unsafe road use unfortunately all too frequently.

"We'll keep repeating the messages because they have to be reinforced but we just wish more people would heed these messages and drive a little more safely than what they do."

Mr Tilyard said most crashes were caused by driver behaviour rather than the age of vehicles or quality of roads.

"Tasmania has the oldest vehicle fleet in the country," he said.

"The average age of a vehicle in Tasmania is about 12.9 years, which surprises a lot of people because you see a lot of newer cars on the road.

"There are certainly more and more newer cars coming onto the road all the time and generally speaking newer cars have more safety features.

"Every day, there are roadworks happening that are also making our road network safer.

"What we do know is that the vast majority of fatal and other serious crashes are not due to poor roads or unsafe vehicles, it comes down to the drivers and riders who are doing the wrong thing."