Railway signalling, T2-T3 tram line, Nice

Nice T2-T3 Tramway Railway Signaling by Mobility

Services provided

• Design, supply, installation tests and commissionning of  :
  • SIL4 new generation interlocking System for surface and in tunnel.
  • SIL2 Automatic train stop (Red signal crossing – automatic emergency brake trigering) for spacing management in tunnel (25 trains equiped and 2 maintenance machines).
• Detection loops for trafic signalling.
• 10 interlocking zones + 1 stabling and maintenance depot.
• SIL4 software assessment by an Independant Safety Assesor (ISA).
• Safety case up to authorities’ approval.
• Operation and maintenance training.

Technical details

• System based on CENELEC SIL4 Safety PLC’s (HIMA).
• 92 axle counters, 280 loops, 27 on-boad automatic train stop equipment.
• In main ligne : 9 interlocking areas, 10 spacing areas, 40 routes.
• At the depot : Train movements on two stabling areas, one maintenance yard, one service area and one washing machine, 100 routes.
• Interface with Operational control center, Rolling stock, traffic management system, Tunnel ventilation system, …

Key points

• Customized SIL4 system adapted to specific operator needs.
• Partial revenue service in 5 phases.
• SIL2 red signal crossing detection trigering emergency brake through beacons and on-board equipment, enabling higher commercial speed.
• Automatic route setting by mission numbers, driver command on trackside control panel.

Date 2017/ 2019
Client Métropole Nice Côte d’Azur

See all our references

Infrastructure safety