Hey Cap (or anybody that knows the answer)

What are driving laws in Jamaica for drinking then driving??? I have never heard nor seen in all my years in JA anybody busted for that. Have seen many tourists crash bikes and care after partaking in some Red Stripes, Rum, etc.. Is there an established blood / alcohol limit??? Imagine with loosening the Ganja laws and then a few cold beers after a smoke it might be a bit dicey??