The AA has unearthed a collection of bizarre European driving rules that could catch unwary drivers out this summer. Believe it or not, you're not allowed to drive a dirty car in Belarus, Romania and even in parts of Russia.

In Portugal it's illegal to carry bicycles on the back of a car and for some unknown reason it's forbidden in Estonia to overtake a tram that has stopped to pick up passengers. Slovenian law states that drivers must not indicate when entering a roundabout, but must signal when leaving it.

But the cream of the crazy crop comes from Spain, where on one-way streets in some areas, cars must be parked on the side of the road with odd numbers on odd-numbered days of the month and on the 'evens' side of the street on the rest.

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