Sharraxaadda

I am not from the area but do travel on the road. On New Rutherford, there are 5 lanes prior to the turn to go onto Rt 1. My understanding is that the left lane and right lanes are for turns only and the 3 middle lanes go straight. However, I see countless times that people will use the left inner lane (2nd to left) to turn onto the Tobin. Is this a legal move?