Last month Eddie was surprised by Queanbeyan Police Sergeant Dominic Goodyear, who handed over a framed letter from NSW Police acting assistant commissioner Stuart Smith, responding to Eddie on behalf of commissioner Andrew Scipione.

He also received a showbag full of police goodies, and was even lucky enough to sit in a highway patrol cruiser.

The whole ordeal was overwhelming for the seven-year old, who's letter to Mr Scipione featured a picture of a sign with a 50 km/h speed limit with rain in the background to signal what the speed limit should be in wet conditions.

"I was once in our car while it was raining hard, and I said to dad 'why don't we have rain speed signs?'," Eddie said.

"'What if cars crash when the road is too wet because they didn't slow down enough?'"

Eddie said he was trying to raise awareness for road safety in his letter, and Sgt Goodyear said all such letters to the commissioner are treated seriously.

"We actually have electronic road signs that are controlled all the way from Sydney, and we use them to change the speed limits if we need to," Goodyear explained to Eddie.

Eddie's father Gordon Marcks encouraged him to write his letter. Eddie told The Queanbeyan Age he would like to join the police when he grows up.