Dad fined for leaving his window open, but there are other little-known road rules for the unwary Julian Harris was fined $44 by Queensland Police after leaving his window down a few centimetres on a hot summer's day. Picture: Jack Tran Source: News Limited A DAD was fined for leaving the window of his parked car wound down but that's not the only little-known road rule that could land motorists with a ticket. Kids (or other adults) and animals in your lap, scaring horses, parking next to fire hydrants and number plate lights are all potential traps for unwary motorists. Julian Harris was visiting family in Brisbane's north on Sunday when he decided to leave two windows down "three to four" centimetres to let some of the hot air escape from the parked car on a 34C day. Julian Harris was fined for living his window slightly open. Guess what? You can also be fined for having a person, or animal, on your lap when driving. It left the father of one with a $44 fine and a rap across the knuckles from police. There are several other "unknown" road rules that could be costly. Among them ... Like it says on the box ... you cannot park in front of these.. A driver must give way to a restive horse if the person in charge of the horse signals. The driver must go as far left as practicable, stop the engine and wait until confident the horse will not be disturbed. Need to bone up on our traffic rules? See them all here Drivers must give way to restive horses.