ドラクエ10ルーレット

ドラクエ10ルーレット for Shinkansen High Speed Rail

The slab ドラクエ10ルーレット is a standard ドラクエ10ルーレット on the Shinkansen high speed rails except very first Tokaido Shinkansen. Its stiffness and accuracy are advantageous for high speed train operation and maintenance compared to conventional ballasted ドラクエ10ルーレット.
In the early days of the slab ドラクエ10ルーレット, its shape was 'flat type'. Then lighter and more economical 'frame type slab' was invented. However, flat type is still used in snowy area.
(The technology was awarded from the Japan Society of Civil Engineers in 2011.)

Flat type slab (Tohoku Shinkansen)

Frame type slab (Hokuriku Shinkansen)

ドラクエ10ルーレット for Conventional Rail

Considering environment, less noisy and vibration-proof 'direct-fastened elastic sleepers' are used on urban railways. Ballastless ドラクエ10ルーレット with this 'direct-fastened elastic sleeper' can also reduce maintenance efforts and its stiffness contributes to robust urban transportation.

Ballastless ドラクエ10ルーレット with direct-fastened elastic sleepers (Narita Sky Access Line)