Roads in Victoria are shared by a multitude of modes of transport, ranging from trucks to bicycles, public buses, trams, taxis as well as private cars of all types. Road safety is a primary concern of road authorities, including the police and government. Victoria was the first jurisdiction in the world to introduce compulsory seat belt legislation. Other measures introduced are drunk driving laws and speed cameras. Victorian road laws are constantly reviewed. The number of road fatalities recorded in Victoria for the year up to June 2011 was reported to be "significantly higher" than it was for the same period in 2010.