Big Dipper, Pleasure Beach Blackpool, UK

Two coaster trains collided inuring 21 people. Source

Formule 1, Parc Saint Paul, France

A 35-year-old woman died of a heart attack after being ejected from a car and falling 16 feet to the ground. Source (in French)

Firehawk, Kings Island, Ohio, USA

A man died from an undiagnosed medical condition after riding the coaster.