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some Cases handled by calgary criminal lawyer, David Chow

Cases presented here are only some of the cases handled by David Chow. All cases use lettering to protect the identity of the client for solicitor-client privilege purposes. The case lettering does not necessarily reflect the client's actual initials.  David has successfully defended many clients not represented here.


R. v. R.R. L.

Posted in Impaired Driving, Criminal Driving Offences and

February 25, 2020

(Calgary, P.C. - DUI).  David Chow is a Calgary DUI lawyer who defended his first criminal impaired driving case in 1999. In RRL the Accused was charged with failing to provide a sample of breath into an approved screening device (ASD). An approved screening device is an investigative tool used to presumptively test blood-alcohol. In December 2018 the Government changed the decades old roadside breath screening law from a process requiring "reasonable suspicion" that the motorist had alcohol in his or her body to a demand requiring mandatory compliance without meeting any investigative standard. According to recent commentary by the City of Calgary Police Department, all motorists are now a "supply sample". RRL had numerous defences. Firstly, there was delay in making the mandatory screening demand. Secondly, as a result of the delay, there were arguable right to counsel issues. Thirdly, the accused was captured on camera and it appeared that he was not trying to defeat the instrument. Fourthly, there were issues with the police grounds for arrest. As a result of these issues and others, the Accused successfully defended the case. If you are searching for an impaired driving lawyer or a Calgary criminal lawyer for any other case, exercise due diligence and call David Chow for a free consultation. Not all Calgary criminal lawyers have experience defending DUI charges; so it is your responsibility to choose wisely.


This entry was posted in Impaired Driving, Criminal Driving Offences and posted on February 25, 2020


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