A 90-year-old driver is suspected of running a red light and hitting four pedestrians southwest of Tokyo on Monday, killing one of them, police said, in an incident that again highlights the problem of elderly drivers involved in fatal accidents.The police arrested Kumiko Saito, who was driving the car in Chigasaki city in Kanagawa Prefecture on suspicion of negligence causing death and bodily injury. She passed a cognitive function test in December and renewed her driver's license in March.According to the police, Saito's vehicle left a car repair shop and went out on a road at around 10:5…READ FULL ARTICLE