Car accidents are often caused by one or more of the following driver errors: speeding or driving too fast for the road conditions; losing control of the car; failing to see a person, vehicle or obstruction on the road; failing to take action to avoid a collision; failing to stop or slow down; failing to give way; overtaking too close or in dangerous circumstances; failing to keep to their own carriageway, lane or side of the road; failing to look or signal when changing lane; failing to keep to the highway code; tailgating or driving too close to the vehicle in front; driving a car which was unroadworthy, (such as defective lights, indicators, tyres or brakes); driving whilst on a mobile phone (or otherwise distracted); driving under the influence of alcohol or drugs. Claims can also be made against the council, highway authority or other agencies responsible for safety on the road, if the car accident was caused by their negligence, including: maintenance and repair failures, such as an unsafe or defective road surface; unmarked ramps or other hazards; unlit skips or road works.