Tokyo police requested Monday companies hosting go-kart city tours on public roads improve safety measures due to the increasing popularity of the attraction among foreign tourists.The Metropolitan Police Department said it asked five go-kart rental companies in Tokyo to encourage patrons to wear helmets and protective gear while driving.The activity is becoming increasingly popular among foreigners who are often seen driving go-karts around 2 meters in length and 1 meter in width around the streets of Tokyo. The tourists wear outfits reminiscent of Nintendo Co.'s game characters such as Su…READ FULL ARTICLE