The bigger football-related question is whether Haggans might face NFL discipline, including a potential suspension. The league doesn't comment on individual cases and sometimes doesn't announce punishment right away.
BAC Calculator for 243-pound Male
The Pittsburgh Tribune-Review report on Haggans' incarceration -- 48 hours in jail, followed by seven days of work release -- says authorities measured the 35-year-old linebacker's blood-alcohol percentage at greater than .20 percent.
The chart, put together using one of many blood-alcohol content calculators, suggests a man weighing as much as Haggans weighs (243 pounds) might need to consume 16 beers, each 12 ounces in size, over a two-hour period to exceed a .20 percent blood-alcohol content.
Consuming 24 beers over a 10-hour period might produce a similar reading, as might 16 shots of 80-proof liquor over a three-hour period.
According to the Centers for Disease Control and Prevention, alcohol-impaired drivers are involved in roughly one-third of accident-related deaths, contributing to more than 11,000 deaths in 2009.
Haggans was convicted of DUI in Colorado in 2004, the Tribune-Review reported. The most recent DUI arrest came after authorities cited Haggans for speeding and running a red light in Arizona.
Note: See Haggans' explanation here.