LARGO, Fla. – A pedestrian riding a mobility scooter was seriously injured in a collision with a vehicle in Largo on Saturday night. The crash occurred around 8:03 PM at the intersection of North Missouri Avenue and 4th Avenue NW. According to the Largo Police Department Traffic Homicide Unit, a 2011 Buick Regal was traveling southbound on Missouri Avenue with a green light when it struck a pedestrian on a mobility scooter who was crossing the roadway outside of the designated crosswalk.