Critical Level of alcohol in blood above which there is impairment in driving?

Acute alcohol Poisoning Stages: 1.Excitement -> 50-150mg% 2.Incoordination-->150-250mg% 3.Coma-->>300mg% Permissible level of blood alcohol for driving in India = 30mg% Effect mg% Percentage <0.03% less than 30 Not noticeable 0.03%-0.05% 30-50 Selective impairment 0.05%-0.10% 50-100 Slight impairment 0.10%-0.15% 100-150 Under the influence 0.15%-0.20% 150-200 Drunk 0.20%-0.30% 200-300 Very drunk 0.30%-0.35% 300-350 Stupor to coma over 0.35% over 350 Comatose to death