AŽD Praha is the most significant, exclusive Czech supplier of transportation, signalling telecommunications, automation and information technology. Due to its long tradition and history, datingback to 1954, the Company has gained the leading position among thesuppliers of this technology on the Czech market.
The Company provides
Research, development, design, production, installation, reconstruction, systems sales and servicing of capital equipment for:
railway traffic
underground operation and plant transportation
telecommunications, information and radio systems
telematic applications
road, signalling and parking systems
new phone and public address systems for railway traffic control and passenger information
a number of other products
Our most significant projects
modernisation of railway corridors
modernisation and reconstruction of individual railway lines and level crossings
installation of interlocking and signalling equipment on Prague's underground
installation of automatic control system on line "A" of Prague's underground
installation of road signalling equipment for crossings throughout the Czech Republic
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ESA 11 electronic interlocking system

General description
a interlocking unit where most of the logic and signaling connections are done by relay circuits
used for signaling and managing operation on main and by-lines
suitable for managing middle and big railroad stations
operation comfort comparable with electronic interlocking systems
high reliability and stand-by, low maintenance costs and easy handling
Basic technical description
complies to CENELEC standards
is capable of controlling more than 150 point units
it has an implemented function for processing and monitoring train numbers
the interlocking unit can be modified for operation in other systems than railroad systems
modular system, simple handling
also delivered for harsh climatic conditions
Compatibility
remote control systems of AZD Prague signaling systems
ERTMS/ETCS (Level 1, Level 2) systems
Graphic-technological shell GTN (automated managing of transport documentation)
LDS local diagnostic system
ETMNET and PENET data networks
SZZ-ETB electronic interlocking system

General description
a interlocking unit where most of the logic and signaling connections are done by relay circuits
used for signaling and managing operation on main and by-lines
suitable for managing middle and big railroad stations
operation comfort comparable with electronic interlocking systems
high reliability and stand-by, low maintenance costs and easy handling
Basic technical description
complies to CENELEC standards
is capable of controlling more than 150 point units
it has an implemented function for processing and monitoring train numbers
the interlocking unit can be modified for operation in other systems than railroad systems
modular system, simple handling
also delivered for harsh climatic conditions
Compatibility
remote control systems of AZD Prague signaling systems
ERTMS/ETCS (Level 1, Level 2) systems
Graphic-technological shell GTN (automated managing of transport documentation)
LDS local diagnostic system
ETMNET and PENET data networks
ESA 11v, ESA 11d electronic interlocking system for sidings and mine railways

General description
electronic interlocking unit with an analog interface for outside signaling devices
it is used for securing and managing operation in stations with branched rails and without branched rails
all logic functions are computed by the computer part with a high performance 32bit computer
suitable for managing middle and big railroad stations
high reliability and stand-by, low maintenance costs and easy handling
the ESA 11 is the successor of the SZZ-ETB
Basic technical description
complies to CENELEC standards
is capable of controlling more than 250 point units
it has an implemented function of a signaling device and a function for processing and monitoring train numbers
the interlocking unit can be modified for any railroad system in the whole world
modular system, simple handling
also delivered for harsh climatic conditions
system lifetime is more than 25 years
Compatibility
remote control systems of AZD Prague signaling systems
ERTMS/ETCS (Level 1, Level 2) systems
Graphic-technological shell GTN (automated managing of transport documentation)
LDS local diagnostic system
ETMNET and PENET data networks