The change to the Macrossan Street speed limit, which caused controversy when suddenly brought in late last year, is again under scrutiny, with a long-time Douglas Shire driving instructor saying the signs are incorrect and the new 30km/h and 40km/h limits are unenforceable in some areas.

A State Government Transport and Main Roads Department (TMR) spokesperson has confirmed the signs will likely soon be replaced to make them more compliant.

Road-rules expert Stephen Lee said multiple errors have been made by the TMR when designating the new 30km/h and 40km/h zones in and around the main road of Port Douglas.

At several points when turning onto the street there is inadequate signage informing drivers that the speed limit is 30km/h, he said - most notably when turning right from Wharf Street.

Just before the turn drivers pass a 30km/h sign, but after the turn onto Macrossan there is no sign, which defaults the speed limit to 50km/h along that section of road, Mr Lee said.

The same situation arises when turning right from Grant Street onto Macrossan Street. 

Due to this, Mr Lee says the 30km/h speed limits cannot legally be enforced in those areas.

“If TMR are serious about enforcement of the speed limits then the signage must be correct,” Mr Lee said.

After being contacted by Newsport, a TMR spokesperson said this week that the department was in the process of looking into the Macrossan Street speed-limit signs.

“TMR is progressing plans to review the placement of speed signage along this section of road which experiences high pedestrian traffic,” the spokesperson said.