This Widget should help make you aware of the point at which you should no longer drive a car. The formula for computing the BAL is from the National Highway Traffic Safety Administration.Play around with the Widget and get a feel for when you’re over your legal limit (.08 in most of the US). If you’re like me, you’ll be surprised at how soon this can happen!Please note that this Widget is only meant as a guide. A lot of factors affect your BAL, such as the last time you ate. Version History Initial Release.