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Drinking and Driving
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Sobriety tests and police questioning
At the roadside
Upon pulling you over, police may ask you to
perform physical tests at the roadside. Before making this request,
police do not have to tell you that you have a right to speak
to a lawyer. You do not have to perform such tests. If you do,
police can use the results only to determine if there are grounds
to arrest you for impaired driving or to make a breath demand.
The Crown cannot use the results to establish impairment at your
trial.
Upon pulling you over and before arresting you,
police can also ask you questions at the roadside about how much
you have had to drink. Police can ask these questions before telling
you about your right to a lawyer. You do not have to answer such
questions. But if you do, police can use your responses to determine
if you have alcohol in your body. If police believe that you do,
they may require you to provide a breath sample into a roadside
screening device. The Ontario Court of Appeal recently upheld
a ruling that prevents the Crown from using your responses to
prove your guilt.
At the station
The police officer who operates the breath testing
device may ask you to perform balancing tests such as walking
a straight line ("heel-to-toe test") and touching your
finger to your nose. Do not participate in such tests. Some are
difficult to perform sober. You may be nervous and underestimate
your impairment. You are not required by law to do the tests.
In addition, the police officer who operates the breath device
will ask you questions. Do not answer. Many of the questions (e.g.,
were you driving a motor vehicle tonight, what were you drinking,
how much and when) are designed to elicit responses for use against
you at trial.
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