The colder months often bring difficult driving conditions. So before winter sets in, Hertfordshire Police are stepping up patrols on the county's roads.
It's a visible presence - using marked cars, and speed guns to slow people down. The force hopes seeing more police around will mean drivers think twice about breaking the limit.
Click below to watch a report from ITV News Anglia's Olivia Paterson
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Dry with clear or sunny spells. Winds easing overnight.
Very warm with sunshine. Chance of thundery showers late morning.
A hot, humid and sunny start before cloud increases as a narrow band of thunderstorms spreads northeast. These clear during the afternoon.