J-slab track system based on the Japanese Shinkansen track system will be used in the Mumbai-Ahmedabad Bullet Train project. This is the first time that the J-Slab ballastless track system is being used in India. 352 km in Gujarat and DNH. The route, viaduct and two bullet train depots at Sabarmati and Surat, cover a distance of 704 km. Track to be laid.

The entire process of track installation is mechanized with state-of-the-art machinery specially designed and manufactured as per Japanese specifications. Taking the initiative under the Make-in-India (MII) policy, some machines are now being manufactured in India as well. Track laying work is in progress in Gujarat. Three sets (03) of rail and track construction machinery amounting to more than 35,000 metric tonnes have arrived in Surat and Vadodara for the project. The machines include, a rail feeder car, track slab laying car, CAM laying car and flash butt welding machine, which will be used for track construction works. Assembly, testing and commissioning of these machines is in progress.

Flash Butt Welding Machine (FBWM)

25-meter-long 60 kg rails are welded using a flash butt welding machine (FBWM) to form 200-meter-long panels near the TCB (track construction base) above the viaduct. A total of 3 FBWMs have been procured so far and have been deployed for 320 km. Rail welding fit for high-speed trains running at a speed of up to 1 hour will have to go through a strict approval process before starting. Training on rail weld finishing and rail weld testing has been completed by JARTS.

Track Slab Laying Car (SLC)

The precast track slabs, after being lifted onto the viaduct, are loaded onto a specially designed SLC and transported to the track-laying site. Using the SLC, which can lift 5 slabs at a time, the track slabs are placed on the RC track bed. 3 SLCs have been arranged for the work of laying slabs.

Rail Feeder Car (RFC)

The 200-meter-long panels are laid on the RC track bed using a rail feeder car. A temporary track will be laid on the RC by pushing the RFC rail pair over the RC bed. A total of 4 RFCs have been purchased so far.

Cement Asphalt Mortar Injection Car (CAM CAR)

After placing the track slab in the proper position on the RC bed, the CAM car moves on the parallel track. This CAM car mixes the ingredients for CAM mix in design proportions and this CAM mix is ​​injected under the slab to achieve the required line and level of the track. So far 2 CAM cars have been purchased.