Julie Townsend, the head of road safety charity Brake, said she supports the targeting of younger drivers in their early 20s and morning-after drivers.
She said that many people do not realise the risks of driving after even one small drink.
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Mostly dry and sunny, with the odd shower.
Sunny spells and a few showers Thursday.
Several cars have been submerged after a water main burst in the Black Country, turning a road into a river.