Legislative Background: reforms to the Transportation Provisions of the Criminal Code (Bill C-46)

Annex 4 – International proscribed blood drug concentrations

United Kingdom: Table of Drugs and LimitsFootnote 33
Drug Limit
benzoylecgonine 50 µg/L
cocaine 10 µg/L
delta-9-tetrahydrocannibinol (cannabis) 2 µg/L
ketamine 20 µg/L
lysergic acid diethylamide 1 µg/L
methylamphetamine 10 µg/L
Methylenedioxymethamphetamine (MDMA) 10 µg/L
6-monoacetylmorphine (heroin) 5 µg/L
clonazepam 50 µg/L
diazepam 550 µg/L
flunitrazepam 300 µg/L
lorazepam 100 µg/L
methadone 500 µg/L
morphine 80 µg/L
oxazepam 300 µg/L

temazepam

1,000 µg/L
amphetamine 250 µg/L
Republic of Ireland: Table of Drugs and Limits
Drug Limit
THC 1 ng/ml
Carboxy THC 5 ng/ml
Cocaine 10 ng/ml
Benzolecgonine (Cocaine) 50 ng/ml
6-Acetylmorphine (Heroin) 5 ng/ml
Norway: Table of Drugs and Limits
Drugs Impairment limits comparable to 0,02% (ng/ml in whole blood) Limit for graded sanctions comparable to 0,05% BAC (ng/ml in whole blood) Limit for graded sanctions comparable to 0,12% BAC (ng/ml in whole blood)
Alprazolam 3 6 15
Clonazepam 1.3 3 8
Diazepam 57 143 342
Fenazepam 1.8 5 10
Flunitrazepam 1.6 3 8
Nitrazepam 17 42 98
Oxazepam 172 430 860
Zolpidem 31 77 184
Zopiclone 12 23 58
THC 1.3 3 9
Amphetamine 41 * *
Cocaine 24 * *
MDMA 48 * *
Methamphetamine 45 * *
GHB 10,300 30,900 123,600
Ketamine 55 137 329
LSD 1 * *
Buprenorphine 0.9 * *
Methadone 25 * *
Morphine 9 24 61

Norway has set different limits that result in penalties equivalent to the penalties for BAC

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