In most European countries television commercials appear in longer than in the USA, but less frequent advertising breaks. For instance, instead of 3 minutes every 8 minutes, sometimes there can be 6 or 7 minutes every half an hour. European legislation restricts the time taken by commercial spots to 12 minutes per hour (which is 20%), with a minimum segment duration of 20 or 30 minutes and of course depending on the programme content. But these are maximum restrictions and such specific regulations vary widely from both within and outside the European Union, and actually from network to network. Unlike the in the USA, in Europe the advertising agency name sometimes appear at the beginning or at the end of the ad.