Drink/Drug Driving

Question 1

Prescribed limit: Alcohol

Answer 1

Breath - 35 micro grams in 100 ml of breath.
Blood - 80 milligrams in 100 ml of blood
Urine - 107 milligrams in 100 ml of urine

Question 2

Prescribed limits: Drugs

Answer 2

Cocaine:
Blood limit - 10 micro grams per litre

THC (Cannabis):
Blood limit - 2 micro grams per litre

Amphetamine - 250
Diazepam - 550
Ketamine - 20
Methyl-amphetamine - 10
Morphine - 80

Question 3

Defences to S.5 RTA 1988

Answer 3

Person charged to show:

(a) the specified controlled drug had been prescribed or supplied to him for medical/dental purposes,
(b) he took the drug in accordance with any directions given
(c) his possession of the drug immediately before taking it was not unlawful under S.5 Misuse of Drugs Act 1971

Question 4

What are the considerations for preliminary breath test?

Answer 4

When did they last consumer alcohol?
At least 20 mins should have passed.

Have they used any ‘breath freshening’ sprays?
Have they smoked recently?

Question 5

What are the types of preliminary tests?

Answer 5

Preliminary breath test - roadside
Preliminary impairment test - series of physical and psychomotor tests carried out by specially trained officers - roadside or station
Preliminary drug test - sweat or saliva samples - at the scene or a police station

Question 6

What are the conditions to S.6 RTA 1988?

Answer 6

Requirement can be made if lawfully on private premises.
Officer must be in uniform.
If asked to leave, then no longer lawfully on premises and no power to require will exist.
Any subsequent requirement would be unlawful.