That's 3.4 times the 0.08 legal limit.
http://www.myfoxtwincities.com/story/24665091/franklin-ave-bike-accident-driver-released-from-jail
At 0.21 BAC, according to the graph near the top right of http://en.wikipedia.org/wiki/Blood_alcohol_content
a person has 30 times the relative risk of an accident as a sober person. Extrapolating it out (assuming it is linear from the the last 2 points), it is 45 times the relative risk at 0.27 BAC.
Actually its not linear, as the graph shows the relative risk is rising exponentially with BAC level, so it's well over 45 times the relative risk, but am not up to more scientific curve-fitting right now.
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http://www.southwestjournal.com/news/news/driver-in-fatal-van-bike-collision-charged-memorial-for-rider-planned
The driver in a fatal van-bicycle collision was in Hennepin County jail Feb. 7 on a felony charge of criminal vehicular homicide while under the influence of alcohol.
Bail for John Iverson, 49, was set at $150,000. Iverson submitted to a breath test at the scene of the crash four days earlier and registered a 0.27 blood-alcohol content, more than three times the legal limit to drive of 0.08. Toxicology results from a blood test were still pending Friday.
... Cyclists are organizing a memorial ride for Nalls. Riders plan to meet 3 p.m. Saturday in Loring Park. Riders plan to meet 3 p.m. Saturday in Loring Park. A Facebook post on the event has more details ( https://www.facebook.com/events/1425051811071689/?ref_newsfeed_story_type=regular )
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