They make a very distinctive sound. They are activated 220,000 times over the life of a vehicle, but still the turn signals are often overlooked. For example, according to an Abertis Global Observatory on road safety study in several countries, on average 44% of drivers don’t use them when overtaking and lane changes. Magnolia Paredes, the head of electronic development, lighting and testing at SEAT, points out that “they are an essential signalling element since they warn other road users of our intentions.” Below are five correct ways to use them.