SICE's work on railway systems began with the electrification of the Rampa de Pajares. Since then, and until the mid-1980s, the company has worked regularly with RENFE on railway signalling projects and level crossings, establishing the first contacts with the current Ministry of Transport, Mobility and Urban Agenda.

The relation was cemented in the 1990s when it began to work on the tunnels of the Spanish motorways. Those early projects involved the installation of signalling equipment and safety and fire protection systems. Soon, SICE implemented its own control software. Its hard and persistent work in this area positioned SICE as the leader in complete tunnel management. However, its projects with the Ministry of Transport, Mobility and Urban Agenda were not limited to this area, but extended to installations and equipment for stations and airports, such as parking management or luggage control systems.

SICE has sometimes worked directly with the Motorways Directorate of the Ministry of Public Works, and other times with dependent companies (AENA, ADIF, RENFE).

1923

Electrification of Rampa de Pajares
RENFE

1950 to 1958

Level crossings and railway systems
RENFE

1970

Lighting systems

1994

Somosierra's Tunnel

1996

M40 false tunnel and overlapping carriageways

2001

Padrun Tunnels

2002

User information at Delicias Zaragoza Station ADIF (GIF)

2003

Cross-border Somport tunnel
Car park control at T4 Barajas (AENA)
Torrelavega / Corrales de Buelma Tunnels
Infanzón Grases Tunnel
Branaviella and Nievares Tunnels

2004

Automatic baggage control and transport system at Barcelona Airport
AENA

Single Agent System
RENFE

2007

Santa Isabel Tunnel

2008

Los Yébenes Tunnels

2009

Altet Tunnel

2010

Actions on the A-21 Pyrenees motorway

2011

Wireless Communications in Asturias RENFE

2013

Safety in the Atlantic Axis tunnels ADIF

2015

Installations at the Cádiz Bridge
Maintenance of CECOM Installations
and 24 Hour Security Centre
RENFE
Adaptation of Technical Premises Barcelona
RENFE

2016

Signalling and communications of the Murcia-Cargas-Lorca section
ADIF
Piedrafita Tunnel

2017

Maintenance and extension of LV and Hydraulic Installations at Barcelona airport (AENA)

2018

Monrepós Tunnels

2019

Signalling and communications on the Torrelavega-Santander section
ADIF Adaptation of San Simón Tunnels

2020

Electrical installations in Madrid and Barcelona RENFE suburban railway stations. RENFE

2021

Adaptation to RD 635/2006 of the Montefurado and Piedrafita tunnels in Lugo and Villafranca, Trabadelo and La Escrita tunnels in León.
Adaptation of El Carmen, Llovio, Tezangos, El Fabar, Arenal de Moris and Duesos tunnels to RD 635/2006. A-8 Road PP.KK. Various. TT.MM El Carmen, Villaviciosa and Ribadesella. Province of Asturias