Try to find the 10 mistakes in this passage

In some street there is a two-way traffic for cars, but others are
one-way streets. Streets goes across rivers on bridges
which span them. Pedestrians walk on the pavement;
whenever they want to cross they had better used
zebra-crossings or they will got into trouble with the police.
Drivers must stopped their cars at once whenever they seen
people on pedestrian crossings, so as to gave them right of
way. Trafic in cities is controled by means of traffic lights
and by policeman in order to prevent traffic jams or congestion