If you were charged with either 142(1), than you were charged with "Fail to signal" offense. It does carry 2 pts, as you can check on "Demerit Points" link on the bottom of this page.
(The driver or operator of a vehicle upon a highway before turning to the left or right at any intersection or into a private road or driveway or from one lane for traffic to another lane for traffic or to leave the roadway shall first see that the movement can be made in safety, and if the operation of any other vehicle may be affected by the movement shall give a signal plainly visible to the driver or operator of the other vehicle of the intention to make the movement. R.S.O. 1990, c. H.8, s. 142 (1). )
Can you describe (or better yet, give the coordinates, hwy names, i.e. 403 on York Rd. Eastbound exit) of where the collision happened? Some of us might be familiar with the area and can give you a great advice, or to analyze best what has happened, or argue about the poor visibility afforded by the highway builders, etc.
In any case, you have about 4 months before your trial date, maybe more. I suggest you use them wisely, do some research.
The section that corresponds to "Fail to obey signs" is 182(2), so you posted it in the wrong board.