Canada:
Alberta: Highway Traffic Act
Window glazing
52 (1) Subject to this section, no person shall place or install in a motor vehicle a transparent, translucent or opaque material on or in place of the
(a) windshield glazing, or
(b) side window glazing that is beside or forward of the driver on the right and left hand side of the motor vehicle.
(2) No person shall place or install in a motor vehicle a transparent, translucent or opaque material on or in place of the rear window glazing unless the motor vehicle is equipped with outside rear view mirrors on the left and right of the motor vehicle that comply with the requirements of section 53(2).
(3) Subsections (1) and (2) do not
(a) apply to the equivalent replacement of the glazing installed by the manufacturer of the motor vehicle,
(b) prohibit the use of clear untinted frost shields, or
(c) prohibit the use of window stickers as long as they do not impair the operator’s field of vision or otherwise impair the safe operation of the motor vehicle.
(4) The owner of a motor vehicle shall ensure that the view through all frost shields on the motor vehicle is not impaired by discoloration, scratches or other damage.
(5) No person shall place or install any material on or in place of any window glazing that, by reason of sunlight or the headlights of other vehicles, casts a glare at other vehicles on the highway.
(6) No person shall, after January 1, 1981 operate on a highway a motor vehicle that contains material that is prohibited by this section. RSA 1980 cH-7 s52
Windshield to be clear
126 No person shall drive a vehicle on a highway if the view through the windshield or windows is so obscured by mud, frost, steam or any other thing as to make the driving of the vehicle hazardous or dangerous. RSA 1980 cH-7 s126
-------------------------------------------
FYI for us Albertans.
Although I like the look of tint on a vehicle - and its benefits - I for one do not agree that the front windows on a vehicle should be tintable. Let alone a windshield. OMG.
I had tint on a previous car I owned ('89 Mustang 5.0L). I once got pulled over and was asked whether I knew the tinting, on the front windows, was illegal. I played dumb and said no. He wrote me a $25 ticket and went on my merry way. Shortly thereafter, I decided to remove the tint from the front windows. I felt it wasn't worth the battery of tickets I might receive.
I can understand why it's more of an issue - in hot, hot places like California, Arizona, Florida, etc.) In Canada we get around 3 days of hot weather. Seriously? No. But this year it feels like it. It's been cold and wet. Still waiting for summer to arrive. But seriously...I do understand the benefit if you live somewhere hot.
What I don't agree with is how dark some people choose to go. 5% or 10% IMHO is just way too dark on the front windows. If I can't see you then it becomes an issue. Put yourself in the shoes of law enforcement. They are likely more probable to have their hand on their gun-holster when they approach your driver's door. You really need to give that some thought!!
It's your vehicle. You have to endure the consequences of your actions. Just my 2 cents.