Alan Pearse is a Toronto impaired driving lawyer, and the author of the Guide to Breathalyzer Certificates in Canada, published by Canada Law Book. He also publishes the Alan Pearse Impaired Driving Newsletter, which offers technical analysis on impaired driving and related topics.

Mr. Pearse is one of the leading DWI lawyers in Toronto, Ontario, and Canada. He is the author of the legal textbook, A Guide to Breathalyzer Certificates In Canada, which is published by Canada Law Book.
He routinely gives lectures to both practicing lawyers and law students on DWI law. His practice is 100% DWI litigation in Toronto and other cities, aside from a small number of pro bono files (i.e. outreach work).
He has been practicing since 2000. In that time, he has defended several thousand people.

Mr. Pearse is a member in good standing of the Law Society of Upper Canada, and has an office in downtown Toronto. He practices throughout Canada, and can appear in every province or territory except Quebec.
On a daily basis, he answers questions from both other lawyers and the general public on DWI law. Lawyers questions are typically answered via email.