Editing Tilting train (section)

===Pendulum car===
[[File:CBQ 6000 Silver Pendulum in Vancouver 01.jpg|thumb|right|CBQ No. 6000, one of three experimental Pendulum cars, at Vancouver in the 1940s]]
{{main|Pendulum car}}
The first experimental tilting train concept was the [[pendulum car|pendulum-suspension "chair" cars]] designed by the Pacific Railway Equipment Company. The first prototype, with an articulated bogie system, was built in 1937 and tested on the [[Atchison, Topeka and Santa Fe Railway]] that year. The company built another three pre-production models in 1939, using more conventional fore-and-aft bogies, and these saw some use with the ''[[San Diegan (train)|San Diegan]]'', among others. Mounted on high springs, the car tilted inwards on curves to counterbalance the [[cant deficiency]] with the induced centrifugal force. The opening of [[World War II]] prevented any immediate orders, and the concept was not revived in the post-war era.