This mega project is related to the construction of
a high-speed railway that connects two Islamic holy places - Mecca and
Medina. It is also called the Haramain high-speed railway, where Haramain refers
to the cities of Mecca and Medina. What is interesting about this project
are the extremely difficult climatic and geographical conditions in
which the line was built - deserts, open valleys, desert winds, and high
temperatures, all dictated a need for different technical solutions
on the same railway line. As usual, let s start with the background of the
project.

The Saudi Railway Master Plan for the period 2010
to 2040 includes a portfolio of 97 billion US dollars dedicated to the
strategic development of 19 individual railway lines. The total
length of these lines is approximately 9,900 km (6,150 miles). These projects
are classified into three stages, with the first stage covering the period
from 2010 to 2025, the second one from 2026 to 2033, and the third from
2034 to 2040. The first stage is considered high-priority and includes the
following projects: Upgrade of the existing double-track conventional
rail line between Dammam and Riyadh. Construction of the Saudi Railway Land
Bridge between Riyadh and Jeddah and between Dammam and Jubail, Construction
of the Haramain High-Speed Railway connecting Mecca, Jeddah and Medina,
and Construction of the North-South Mineral Line between the northern
regions, Ras Al Khair/Jubail, and the capital Riyadh, including the
connection to the proposed railway network in Jordan via Al Haditha -
ESCWA.

The idea of the Saudi Railway Organization with
Haramain High-Speed Railway was to handle the transportation needs of a
growing number of seasonal pilgrims to Mecca. In addition, there are performers
of Umrah and a significant number of permanent residents of the cities
along the way. The plan was to reduce the travel time between Mecca
and Medina to 2 hours and 30 minutes, less than 30 minutes from Mecca to
Jeddah, and about two hours from Jeddah to Medina. The estimated demand
was quite high, with 60 million passengers per year. The city of Mecca
attracts about 2.5 million pilgrims during the period of Hajj every
year, as well as more than 2 million Umrah performers during the month
of Ramadan. And there has already been the existing heavy passenger railway
traffic, especially during Fridays. The authorities also wanted to further stimulate
growth in a massive business zone of King Abdullah Economic City (KAEC).
Due to safety and comfort reasons, the Haramain Railway is also seen by
the Saudi Arabian government as the best option for pilgrims.

(King Abdullah Economic City - KAEC, Saudi Arabia)
Namely, it will help reduce traffic congestion and
accidents on the roads linking Mecca and Medina. Due to all these reasons,
the design and construction of the project needed to withstand heavy
traffic conditions and tough climate, while the track, rolling stock, and
stations needed to be designed in such a way to handle the temperature
changes of up to 50 C. The length of the Haramain high-speed railway is 453
km (281 mi). It was designed as an electrified double track rail line with
a maximum speed of 320 km/h (199 mph), with commercial operation at a
maximum 300 km/h (186 mph). For the purpose of easier design and
construction, the alignment was divided into six major areas: The first
area in the length of 75 km (46 mi) from Mecca to Jeddah, mainly because
this section goes through valleys and rolling terrain, The second area in
the length of 35 km (21 mi) located in urban area of Jeddah, because of
the need for redesigning and reconstruction of 8 highway interchanges, The
third area in the length of 80 km (49 mi) from Jeddah to King
Abdullah Economic City because of the Sabkha Soil deposits
with low bearing capacity, The fourth area in the length of 100 km (62
mi) from King Abdullah Economic City to Near Wadi Al Fora a,
characterized by coastal areas and open valleys, The fifth area in the
length of 85 km (52 mi) from Near Wadi Al Fora a to Near Alyutamah, characterized
by mountainous terrain, narrow valleys and flood plain which required
excessive drainage structures, and Semi mountainous terrain from Near
Alyutamah to Medina in the length of 75 km (46 mi). Additionally, the line
has connecting branch to Jeddah KAIA airport (3.75 km) and auxiliary branches
to the three maintenance bases: a first-rate maintenance
workshop near Mecca, another near Medina, and a depot at 125th km of
the line.

However, the most significant aspects of this project
are definitely high standards of safety and incident management
system. It was planned that the line will be equipped with ERTMS which
will consist of the Da Vinci management system, the ETCS 2 blocking system
and the GSM-R voice and data communications system. Also, reinforced
concrete crash barriers, 1.8m in height, are provided along both sides of
the track in urbanized sections. They are designed to take dynamic loads
of 200 tons striking at speeds of 200 km/h. The Directorate General
of Civil Defence is made responsible for handling potential emergency
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The project includes five state of the art passenger
stations: Mecca, Jeddah Central, Jeddah KAIA, Rabigh-KAEC and Medina. Each
station has a distinct identity and building outlook compatible with
the respective cities they serve which will be discussed in the next
chapter. Based on the approval of the project by the supreme Economic
Council, the construction project is implemented on a Build, Operate,
and Transfer (BOT) approach. It was divided into two phases, with Phase
I being divided into two packages. Phase I - Package 1 consists of the civil
works on the track substructure, including the construction of bridges,
viaducts, retaining walls, tunnels, and embankments. The $1.8 billion design
and construction contract for Package 1 was awarded in March 2009 to
Al Rajhi Alliance which comprises China Railway Construction Corporation
(CRCC), Al Arrab Contracting Company Ltd, Al Suwailem Company and the
French construction company Bouygues. Work began in late 2009, with completion
scheduled for April 2012. Subsequently, some bridges and other
structures were added to the project, especially in area 1, in a
total amount of $1, 04 billion, which was an increase of about 55% to the
initial amount. Because of that the completion was extended to December
2014, but, bearing in mind the complexity of this phase, all works
were completed only in 2016. Phase I - Package 2 includes the construction
of the five passenger stations, four along the line and fifth on the
branch towards the Jeddah KAIA airport. In April 2009, $38 million worth
of design contracts for the stations were awarded to a joint venture of
Foster&Partners and Buro Happold.

These companies have adopted a modularised
approach to designing, taking into account Islamic architectural
traditions. The stations represent custom designed prefabricated
structures that maximize day light use while effectively filtering
harmful ultraviolet rays, which is a kind of energy efficient green-building
concept. The outlook of the stations is almost common to all 5, it
is marked by a sequence of arches 25 meters high, but with colour
variations that identify the different cities: gold for Mecca, in
reference to the gold leaf of the Kaaba; green for Medina, for the
colour of the dome of the Prophet's Mosque; blue and silver for Rabigh-KAEC,
as a symbol of a new emerging city, and purple for Jeddah, in
reference to its culture. In addition to the main arrivals and departures
building, their design includes a mosque, a fire station, a helipad,
and shopping and parking areas. Contracts for the construction of the stations
were awarded in February 2011: for the Jeddah central and Jeddah KAIA
in the value of $878 million, Mecca central in the value of $963
million, King Abdullah Economic City in the value of $530 million,
and Knowledge Economic City in Medina in the value of $468 million. We
could mention here that in September 2019, a devastating fire caught the
Jeddah station, with the blaze starting in the stations ceiling according to
reports, which injured 11 people. It took more than 10 hrs. for firefighters
to put the fire under control. Phase II of the project included the remaining
infrastructure works that are not included in Phase-1: design, construction, operation
and maintenance of the track, installation of signaling and
telecommunication systems, power supply and catenaries.
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It also includes the supply and maintenance of
rolling stock, and the operation and maintenance of the line for 12 years.
On 26th October 2011, the Saudi Railways Organization announced that the
Saudi-Spanish consortium Al Shoula Group made up 88% of Spanish and 12% Saudis
companies won the Phase 2 contract in the amount of $9,3 b. Moreover, this
phase was divided into two parts; the first being the construction
of the superstructure, the supply of rolling stock and the
commissioning of the line. The second part relates to the operation
of the line and the maintenance of rolling stock, with Renfe and Adif in
charge for the operation of trains and managing the line. The works started
in September 2012 with a completion deadline in December 2016.
Following the 32-month extension granted to Phase 1.1, Saudi Railway
Organization and the Phase 2 consortium agreed in February 2014 on an
Acceleration Plan to complete all works by the first quarter of 2018
- Which was eventually achieved. Talgo has supplied a fleet of 35 T350 trains
and an additional train for the exclusive use of the Saudi royal family.
The trains have capacity of 417 seated passengers, and are formed of
two power cars, four business-class coaches, eight standard-class
vehicles, as well as a caf , in a total length of 215m. The 300 km/h
trains are based on the AVE Class series 102 and 112 supplied to
Renfe, which have been adapted to operate in the extreme climatic conditions
of the Arabian Desert.
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Among other, they have special insulation, window
protection and a high-performance air conditioning. In addition, the
trains feature special blowers positioned close to the wheels for
clearing sand off the track together with military-grade air
filters, reinforced door seals to prevent dust ingress, and
polyurethane coatings on the driving cab windscreen to reduce wear from
the blowing sand. Some dynamic tests were performed back in 2017 in
extreme environmental conditions, with very high temperatures close to 50
C, and with the presence of desert sand. Results were good having in
mind the trains had a good response to such conditions while still achieving
the maximum speed of 300 km/h.
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The project was opened in conjunction with the
Saudi National Day on 25th September 2018, in the presence of Saudi King
Salman bin Abdulaziz. Commercial service on the line was fully
introduced on 17th October 2018. At the beginning of the commissioning, the
operator was running 40 trips per week, or eight trains per day, five days
a week, with two days reserved for finalization of infrastructure
works. For the first 6 months of operation, the line has carried more
than 250,000 passengers. Load factors of 82% have been achieved on more
than 450 trips that have taken place. Services operated at 93%
punctuality. We were unable to find any further information on the
ridership, so if any of our viewers are ware of those figures, we would be
grateful if they share them with us in the comments. Also, we must point
out that one of the biggest success stories of the project was the
ability of suppliers from across the world to work successfully together
in Saudi Arabia.

This was the story of a fantastic mega
project that once again showed that engineering has no boundaries and
that it is possible to tame nature for the benefit of both, nature
and humans. We hope that this railway line will show its true potential in
the future, bearing in mind it had only one full year of operation -
as you know, 2020 brought us pandemic, with great restrictions, which
especially affected passenger transport systems. One last thing before
the end. As some of you already know, Railways Explained is now on
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