A negligent driver is a person who operates a vehicle in a careless or reckless manner, disregarding the safety and well-being of others on the road. This can include driving under the influence of drugs or alcohol, speeding, texting while driving, or failing to obey traffic laws such as stop signs or traffic signals. A negligent driver may also be someone who fails to maintain their vehicle properly, leading to accidents caused by mechanical failure. In legal terms, a negligent driver can be held liable for any damages or injuries they cause due to their reckless behavior behind the wheel.