An 18-year-old Griffith man has been convicted and fined after appearing in court on drug driving and speeding charges committed shortly after obtaining his provisional licence.

Blake Robert Costantino Romeo faced Griffith Local Court on 3 September, where he was sentenced on two counts of driving with an illicit drug present in his blood and one charge of exceeding the speed limit by more than 10 km/h.

Magistrate Geraldine Beattie noted that Romeo had also come to police attention in a separate incident for failing to display his P-plates, adding to his string of traffic-related offences in what she described as a poor start to his driving career.

"It wasn't a good year," Magistrate Beattie told the young driver. "Your judgement isn't good. It's a pretty dumb reason for getting into trouble."

The court heard that Romeo's family relied on him for transport, with his solicitor Chelsea Connell explaining the importance of his driving privileges to the household.

"He is supported by his family in court today," Ms Connell told the magistrate. "Mr Romeo has family commitments, needs to drive so he can drive his siblings."

In mitigation, Ms Connell informed the court that Romeo had completed the traffic offenders programme and submitted what she described as "a very well-warranted reflection" on his actions.

Magistrate Beattie acknowledged the quality of Romeo's reflection, describing it as "very insightful," but emphasised the need for maturity moving forward.

"When you eventually get your licence back, you have to have the maturity not to do (the offence) again," she warned.

For the first count of driving with an illicit drug in his system, Romeo received no penalty under section 10A of the Crimes (Sentencing Procedure) Act.

However, for the speeding charge and the second drug driving count, he was fined $300 and disqualified from driving for three months.

"The bottom line is, you aren't to drive," Magistrate Beattie made clear as she handed down the sentence.

The case highlights ongoing concerns about drug driving amongst young drivers, particularly those on provisional licences who face stricter penalties and zero tolerance for such offences.