Speed cameras are dotted throughout the city. If caught speeding, you will receive a court summons in the post. If you don’t speak Japanese, you will need to hire a translator to go with you. Speed limits vary depending on the road: Expressways – 80 to 100kph, urban areas – 40kph, side streets – 30kph, all other roads – 50-60kph. In terms of lane discipline, undertaking and overtaking is permissible.