Watch out for treacherously slippery roads: rain after drought causes slipperiness

When people think of slippery roads, many people automatically think of winter. The coldest season is therefore formidable because of its many rain, ice and snow. But even in the summer you better watch out for a slipper. HLN science journalist Martijn Peters explains why you have to remain vigilant behind the wheel, and how you can avoid an accident due to slippery roads.