If you OWN a business you can write off transportation costs. However you cannot write of ttc tickets/passes and such, just as you cannot write off the clothes you buy to wear to work. The only way you would be able to was if you were self employed or as I said before, owned the business. Also if your profession required you to travel ie/ real estate agent, then you could claim A PORTION of the car expenses. For those of you who are claiming gas and car related expenses, this is not "allowed" either. There are very tight rules for expenses, in the event of an audit most people who do their own claims would likely be in a bit of trouble. On the other hand, most people are not audited.
smilez