Fifteen percent of Australian parents have admitted to using a handheld mobile phone while driving with their kids in the car according to new research released by Telstra.

These findings come as many of families are travelling on our roads during school holidays.

Research shows that using a mobile phone while driving increases crash risk by at least four times. Typically run-off-the-road' crashes and rear end' crashes are the most common types of crashes associated with mobile phone usage.#

Telstra, Executive Director, Consumer, Ms Jenny Young, said the high number of families expected on the roads meant the driving and mobile phone safety reminders were extremely important at this time of year.

"Our message to motorists is simple and important - make safety your most important call and don't use a handheld mobile phone instead of concentrating on the road."

The survey of one thousand motorists also found that despite increased penalties only half of respondents are worried about being fined for driving while using a handheld mobile phone.*

"You wouldn't read the paper while driving, so why would you drive while talking or texting on your handheld mobile? Not only is it illegal, it's also extremely dangerous." said, Ms Young.

Telstra also wants to remind people about the importance of storing an ICE (In Case of Emergency) phone number in their mobile phones.

"These numbers can help emergency services get important information, fast, in case of an accident," said Ms Young.

Safe driving tips for using a mobile phone:

Never read or send text messages while driving

To make a call, check MessageBank or read Voice to Text pull over and park safely.

Plan breaks in your trip to stop and make phone calls.

Tell your family and friends not to call when you know you'll be driving.

Update your ICE (In Case of Emergency) contacts in your mobile phone.