could also catch vehicle inspection and registration violations as well. When an individual is stopped for a sobriety check, the officer may also determine that they have probable cause to search the vehicle, which may lead to the officer finding illegal drugs or weapons. Australia In Australia, drivers may be stopped at any point along any public road by a police officer for what police term a "random breath test", commonly referred to as an "RBT". For an operation involving a large number of police (typically 10–20) at a fixed location, the colloquial term "booze bus" is often used. In July 1976, legislation allowing Random Breath Testing (RBT) came into force in the State of Victoria, with this being the first State in Australia to introduce such. New South Wales began its own large RBT road safety campaign in 1982. Since then, fatal crashes involving alcohol have dropped from about 40 per cent of all fatalities to the 2012 level of 15 per cent. Police conduct about 5 million breath tests each year in NSW with every police car in the State able to conduct mobile RBT. In all states, the maximum blood alcohol content of 0.05% is enforced. Drivers who are found to have a preliminary reading of equal to or greater than 0.05% are usually arrested and taken to the police station or RBT/"booze bus" to undertake a breath analysis. The machine used to perform a breath analysis is more sophisticated than the portable device that is used to administer a roadside RBT with the results of a breath analysis being used as evidence in court to prove a drunk driving charge. In all states and territories the concept has been extended to make sobriety checkpoints also use "Random Drug Test (RDT) buses" (or "dual buses"), capable of testing drivers for a number of illicit drugs including cannabis (tetrahydrocannabinol), methamphetamine, and ecstasy (MDMA). RBT activities even feature on a popular Australian reality television series known by the same name, RBT (TV series). As of late 2017 the NSW Police Force has announced it is going to expand its mobile drug testing to include cocaine in 2018. Trials of the program will be in Sydney's eastern suburbs. Drunk driving continues to be one of the main causes of road fatalities and injuries, responsible for 30 percent of road fatalities across Australia. Canada In Ontario, Canada, sobriety checkpoints are referred