If you drive regularly in Italy it's worth getting a telepass tag. it costs a few euro a month but it allows you to pay without stopping every time. Failing this, I recommend using a credit card as these lanes (clearly marked) are often empty when the cash payment lanes are full.

Speed limits have changed in Italy and the rule is now 130 on 2 lane sections and 150 on three or more lane sections. The trip to Bologna and on is largely 150 kph until you hit 2 lanes around Rimini. There are speed cameras in many of the gantries marked "Tutor"

You need to carry your licence when you drive and also have a hi vis jacket or vest in the front of the car. Available for a few quid on the motorway or petrol stations.

Easter traffic is murderous as well, so try not to travel Friday, Saturday or Monday if you are nervous.

Italy is beautiful and you'll have a great time, great food and meet lovely people. Don't forget to wear sunglasses at ALL times and stare unrelentingly if you want to pass as a local.

Best of luck on the Autostrada