Being on the roads of Australia, don't even think of acting on a sudden impulse to put your arm (leg or trunk) out the window or get out the sun roof. According to driving regulations, a driver and passengers must be completely inside the car, and no body part should hang out.
Before taking the wheel, the legislation of Denmark requires drivers to look under their vehicle, to check whether there is an animal or a person there.
One of the cities of Canada (Kanata) forbids to paint the garage doors in lilac color. Also, it is not recommended to repair a car right on the street, except if the breakdown does not make it possible to move on. There are also oddities in traffic rules in Montreal city. It is forbidden to place ads for sale on a driving car. This can only be done if a vehicle is stationary.
Until 2017, the government of this state was forbidding the women to drive a car. The revision of the legislation was caused by protests, which were taking place since 1990. However, even today, to get behind the wheel of a car, a woman must obtain the permission from her husband, father or older brother.
On the territory of this country, there is a ban on spitting on the sidewalk. Also, you can not cross the road if there is no a corresponding sign in about 54 (meters) yards radius. And drivers are forbidden to approach pedestrians for a distance of less than 54 (meters) yards.
In Thailand, it is prohibited to drive shirtless, but the tourists often violate this rule. It does not matter how hot or humidly it is there, the driver should be at least in some kind of t-shirt. In addition, when riding a bike, you still need a helmet and it is forbidden to take it off.
There is quite an interesting restriction in South Korea. Local policemen are forbidden to hide bribes received from drivers. They can take bribes, but can't withhold the information about it.
Drivers in Germany are forbidden to show emotions. There is a separate paragraph in the traffic law which contains a fine for public demonstration of the middle finger or arm bent at the elbow, and even for the tongue sticking out on the road. As a rule, you can get a fine from 500 to 3 000 euros for such actions. Also, in Germany it is forbidden to be without fuel on an autobahn — it is violation which is punished by a decent fine.
Here, car owners with license plates which end with the number 1 and 2 are not allowed to drive on Mondays. It's probably one of the most absurd rules.
Driving a car in Costa Rica, you can drink low-alcohol beverages until the drunken state comes. Moreover, a driver must independently gauge his/her strength, before opening a bottle while driving.
Since 2012, the rule that every driver, stopped by the police, must pass breathalyzer test has come into force. In this case, each car should be equipped with its own set for such a test. Refusal of this procedure threatens with immediate arrest.
Alaska doesn't allow to drive a car with a dog on the roof. It would be funny to look at this picture.