The Smiler

The Smiler is a steel rollercoaster in Alton Towers, Staffordshire, England. It has the most inversions than any rollercoaster in the world.

History
In 2011, a new ride dubbed "SW7" was announced. The ride was constructed in a two-year period. Then in 2013, the Smiler opened. It has 14 inversions, including the lift hill. The ride became worldwide, being the most successful ride in the Alton Towers. The ride has been advertised to make people smile, with the use of a chemical called nitrous oxide, but this was later removed before the ride opened, due to it's then unknown toxicity when not mixed with other chemicals.

Incidents
The ride has suffered a serious of incidents, although, until an incident in 2015, they were all minor.

On May 2013, just weeks after the ride opened, the train stalled on the first hill, trapping riders on the train for nearly an hour. They were later evacuated.

On June 2013, a train stalled on the batwing element, before the park opened, during a test ride. The ride was closed for a week. This happened again two weeks later.

On July 2013, a large steel girder fell from the track when the ride went over the cobra hill. The ride was fully checked and scanned before it reopened, and it said the cause of the fallen girder was a loose bolt.

On November 2013, four people received minor injuries when the train's wheel came loose when the ride came to a complete stop.

In the most serious incident, on June 2nd 2015, a train full of riders struck an empty train in the middle of the ride. Eleven people were seriously injured, in which two girls needed partial-leg amputations. An immediate evacuation of the park occurred, and the ride closed for more checks. The park announced that the accident was the most-fatal incident that the park has ever experienced. The ride has been remained shut when the park reopened, and there are considerations of dismantling the ride, but this has later been proven wrong.