Two Beers and a Sick Child
It is 11:20 p.m. and Devon, a 38-year-old man weighing about 78 kg, has a sick child at home. The child's temperature is 39.8°C and he has been vomiting. Devon drank two 330 ml bottles of 5% beer between 8:30 and 9:30 p.m. At about 9:00 p.m. he also took a chlorpheniramine tablet for a cold; the packet warns that it may cause drowsiness. He feels 'fine', but his eyes are heavy and his speech is slightly slow. His partner is working a night shift, no neighbour answers, and the nearest hospital is 6 km away on lit main roads. A police checkpoint has been operating on that road. Devon has a valid licence, the car is insured and fit, and he has no previous convictions. He asks you whether he should drive.
1. Is it safe and lawful for him to drive? Explain the factors, including the legal limit.
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He should not drive. The legal limits in Jamaica are 35 micrograms of alcohol per 100 ml of breath or 80 mg per 100 ml of blood, but being under a limit is not the same as being fit. Two 330 ml bottles at 5% contain about 26 g of pure alcohol; for a 78 kg man that is not negligible, and elimination is only about 10–15 mg/100 ml per hour, varying widely. More important, chlorpheniramine is a sedating antihistamine and alcohol adds to that sedation. Heavy eyes and slowed speech are signs of impairment. He could be committing the offence of driving while unfit through drink or drugs even if a breath test later reads below the limit. The child's illness creates pressure, but it does not reduce the risk.
2. What are his realistic alternatives, and how should he decide between them?
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Call 110 for an ambulance if the child is drowsy, breathing fast, unable to keep fluids down or has a fit; a temperature near 40°C with vomiting needs medical advice. If the child is alert and not in immediate danger, call a taxi, a neighbour, his partner's workplace or a relative. He can also ask the police or a hospital switchboard for help. The decision rule is: separate the child's urgency from the driving decision. If the child needs urgent care, use an ambulance; if not, use a licensed driver. Do not 'sober up' with coffee, a cold shower or food - those do not remove alcohol or the drug's effect.
3. If he drives and is stopped at the checkpoint, what should he expect and how should he behave?
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At a checkpoint, stop as directed, switch off the engine, keep your hands visible and be polite. Expect to produce your licence, insurance and fitness documents. If the officer smells alcohol or sees signs of impairment, expect to be required to give a breath specimen; refusal can itself be an offence. Do not argue, offer money or try to talk your way out. If arrested, cooperate and ask to contact a lawyer. The fact that the child was ill may be mitigation, but it is not a defence to driving while unfit.