Lowering the legal drink-drive limit would receive widespread public support, according to a poll for ITV's Tonight programme.
The survey gainsays a Government consultation that is expected to come out against reducing the blood-alcohol limit from 80mg to 50mg.
The poll showed that three quarters of those questioned would support the reduction - and that 17% had driven home after a night out knowing they were probably over the limit.
Amanda Peak, whose sons Arron, 10, and Ben, 8, died in a drink-drive crash, is seen in the programme arguing that drivers should not be allowed to drink at all.
Plymouth Argyle goalkeeper Luke McCormick, 25, was jailed for seven years and four months after admitting causing the deaths of the boys while over the limit.
Mrs Peak says: "If you're going to drive, you shouldn't drink at all and if you are caught drink-driving the penalty should be a hell of a lot more than what it is.
"Take the licence off them for six months and give them a £2,000 fine. It's going to make them think every time they get in a car that it's not worth it."
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