A timely red light is being credited with helping to stop an impaired driver trying to run from police overnight. Police say they spotted a 19 year old man driving eratically on Court Street at approximately 2:00 o'clock this morning. The man drove away from police when they tried to stop him but he got caught up in traffic at a red light on Cumberland and Water Street where police were able to stop him from getting away a second time. The man remains in custody and is scheduled to appear in video court today.