Some two months after Germany partially legalized the recreational use of cannabis, parliament has voted to amend the much anticipated law to tighten restrictions for driving. The amendments, passed late on Thursday, also include additional provisions for the cultivation of cannabis in so-called cannabis clubs to prevent the emergence of large-scale plantations. Following years of debate, Berlin passed new cannabis legislation in February, allowing German adults to legally possess, purchase or cultivate marijuana, although strict regulations and limits still apply. Under the law, in force sinc…