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Project ALEX(Automatic LX)
New Level Crossing
Control System
Status in March 2016
2 2016-03-23
Trafikverket,
Swedish Transport Administration
• 16 500 track km in Sweden
• Trafikverket manages 14 700 km
• 80 % electrified
• 8 900 single track km
• 6 500 LX
3 2016-03-23
Level Crossing Protection
Protection at our 6475 LX
Full barrier 19%
Half barrier 15%
Light and sound 12%
Passive protection 20%
No protection 34%
Source: Plk-webb 2014-01-17
4 2016-03-23
2770 LX have active protection
-
20
40
60
80
100
120
140
160
An
tal i
nst
alle
rad
e
Year
Maintenance DebtHalf is more than 25 years old!
5 2016-03-23
LX control systems in Sweden
• 1948, Sweden was among the first to build automatic LX
• Today Trafikverket has one of Europe's oldest automatic
LX control systems with 65-85 year old technology
Skånebanan 2014
Our latest solution was introduced
in 1967 when Sweden changed to
right-hand traffic.
JRK relays, produced 1952-today
6 2016-03-23
Project ALEX – procure new LX control systems
• The Director General has approved the ALEX Procurement strategy
and Supply plan
• There are many suppliers of modern solutions in the EU
• Several products meet the requirements
• Trafikverket announced at the annual National Suppliers Day 2015:
• We have problems obtaining spare parts for our LX installations
• We need to replace 70-100 LX / year
• Framework agreements will be signed with two suppliers
• It includes four pilot installations per supplier
• Cost: 10–30 M€ / year
• Procurement information, see http://www.trafikverket.se/for-dig-i-
branschen/upphandling/Planerade-upphandlingar, search for
“Vägskyddsanläggningar” and http://www.trafikverket.se/for-dig-i-
branschen/teknik/anlaggningsteknik/vagskyddsanlaggningar/alex/
7 2016-03-23
Preliminary time schedule
Serial installations - 2019
Approvals by NSA and Trafikverket – December 2018
Probationary period of in-service operation – 6 to 12 months
Pilot installations – Q4 2017
Contracts signed – December 2016
Procurement – RFQ released June 30 2016
Requirements specification - Ongoing
Supply and Procurement strategy- Approved
8 2016-03-23
• The following pages describe the system that project ALEX now
specifies
• All information is subject to change before the RFQ is released in
June, 2016
• Trafikverket is still in a silent period regarding ALEX and is unable to
answer any questions
Status in March 2016
9 2016-03-23
10 2016-03-23
• AA, LX control system
– The LX supplier will be responsible for
• Assembly of all components in the cabinet unless other component contracts
(SG-SL) prevent this
• Delivery to LX site
• Installation of cabinet at LX site
– Trafikverket will be responsible for
• installation of external objects (FE-FN and AD) at pilot LX sites
– Once the system has received type approval, the LX supplier can offer installation
work in future site specific contracts
• AD, Train velocity sensor
– Not a safety component (the safety is ensured by track circuits)
– Relay interface to existing signal cables
– Existing power supply (24 V) can be reused
– Must detect trains above a specific velocity
– RAM requirements are the same as for other subsystems
– Estimated need is 800 units
• FP, Logging & Diagnostic
– The data will be transferred to TH (ALEX web service)
Comments to the system architecture
11 2016-03-23
• SB, Power
– Power components will be sourced from separate frame agreements
• SC, Obstacle detection
– Obstacle detection will be sourced from a separate frame agreement
– Purchased 2013
• SG, Train detection
– Already installed track circuits will be used for detecting approaching trains
Continued
12 2016-03-23
Comparison with the functions of today
To improve railway safety we add
– Logging and Diagnostics
To improve road safety we add
– Acoustic signals adjusted to the
ambient needs
– Improved protection against
trespassing ("barrier skirts")
To reduce maintenance costs we add
– IP/MPLS communication via optic
fiber or GSM-R
– ALEX web services for
maintenance personnel
• Status, log and diagnosis via
web interface
• Alarm on error
13 2016-03-23
• Industrial 19 inch racks
• A low cabinet to provide road users a good visibility along the track
• Modular, one door per function
• ALEX is one of several modules
Proposal for new cabinet
An example of a cabinet;
Toll road equipment in
Gothenburg
14 2016-03-23
Modules/functions
• POWER
– Surge protection
– Rectifiers
– Batteries for 10 h
– Connection of alternative power supply
– Climate control
• IT
– IP/MPLS network via optic fiber or GSM-R
– Access control
– UPS service (power surveillance)
– ALEX web service for maintenance
personnel
• SIGNAL
– Interfaces to adjacent signaling
• Interlocking/ERTMS
• Track circuit (separate power, NiCd)
• Line Block
• ATC
• Disable Adjacent LX
• Common Distant signal toward trains
– ALEX, LX control system
– HEKTOR, Obstacle Detector system
The example cabinet including doors
The example cabinet excluding doors
15 2016-03-23
• Training Center personnel are
assembling the prototype
• The prototype is used to
– Optimize space
– Dimension of the batteries
– Find interface requirements
– Receive feedback from maintenance
personnel and suppliers
• Photos and descriptions will be
released in April 2016
• During the tender period, a transQ
(category 1.3.5 Level Crossing)
qualified supplier can make an
appointment for a closer look at the
prototype
A cabinet prototype is built at the
Railway Training CenterALEX is one of several
possible modules in the
cabinet
16 2016-03-23
• Project ALEX must conduct in-service operation with the 4 future LX
protection options to validate all interfaces
1. Full barrier
interfaces to interlocking and obstacle detector
2. Half barrier
interface to track circuits; automatic on a line
3. Walkway, bicycle path and platform
Optical signals and signs in half size, barrier skirts and barrier
machines without moving counter weights (risk of causing crushing
injuries will not be accepted)
4. User-worked road barrier (Operated with mechanical key with chip for
authentication). Mainly a “one user” solution for farm/forest crossings.
• All 4 pilot installation must undergo probationary period of in-service
operation (6-12 months) to be approved by the National Safety
Authority
• When all 4 pilot installations are NSA approved Trafikverket can issue
a type approval for the LX control system and serial installations can
begin
4 pilot installations per supplier
17 2016-03-23
Thank you for your attention!
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