As part of the project, as commissioned by BKK Zrt., our Company prepared the detailed designs of the reconstruction of tram line 1 as a member of the 1.3 CONSORTIUM.

In the past, the tram line was implemented together with the construction of Hungária körút, a boulevard. Our Company has designed the implementation of the whole line practically continuously since the 1970s, from design studies to detailed designs, in every phase. Construction was carried out in stages since the mid-1980s between Bécsi út and the then Lágymányos Bridge.

Designs were prepared for the extension of the line, simultaneously with the construction of Szerémi út, but the tramways were not constructed at the time of the construction of Rákóczi (then Lágymányos) Bridge. We prepared several studies, then in the period between 2007 and 2010, an approval design for extension to Fehérvári út (with a feasibility study and an environmental permit document).

In the present project, we prepared refurbishment designs for the section between Bécsi út and Rákóczi Bridge from the approval designs to as-built drawings for the reconstruction of tracks in a deteriorating state of repair since construction.

Main technical content of the project:

1. The tracks were completely reconstructed between Bécsi út and Kerepesi út, together with the connected catenary, power supply and signalling system facilities.
2. The Kőbányai út junction and the platforms were reconstructed between Kerepesi út and Rákóczi Bridge.
3. Platforms with a uniform height of 26 cm and a useful length of 56 m were constructed on the whole line.
4. At every stop, the platforms are disabled accessible.
5. Uniform passenger shelters were set up on the platform of every stop.
6. Upgrading of existing subways.

Project stages:
Section 1: between the Bécsi út terminal and Kerepesi út

• section length: 8,300 metres of track
• number of stops: 15

The track was refurbished on its current route, except at the stops where the spacing and route of the tracks changed in order to install lifts and elevators. The tracks were reconstructed with a modern paved permanent way. A permanent way with embedded rails, a grass covering and an irrigation network was constructed on this section.

In addition to track construction, a return circuit was also refurbished together with drainage systems.

Catenary poles were replaced as needed. The trolley wire was completely reconstructed.

Sidings and crossovers were reconstructed with modern adjustment devices.

Of the level crossings, the busy ones were built with a high bearing-capacity permanent way with embedded rails and a heavy duty paving.

In connection with the reconstruction of tracks, road kerbs were also lowered at pedestrian crossings in accordance with the regulations, taking into account the needs of the blind and the visually impaired.

Due to the reconstruction of the tramway, the contracting road lanes were also refurbished with an asphalt paving to the required extent.

Pedestrian subways on the section: Flórián tér, Szentlélek tér, Népfürdő utca, Árpád Bridge M (Váci út) and Kacsóh Pongrác út.

Section 2: between Kerepesi út and the Lágymányosi Bridge temporary terminal

• section length: 5,000 metres of track
• number of stops: 9

The platforms of stops were reconstructed on the section. Tracks were constructed between Kőbányai út and Kismartoni utca together with a tram crossing in Kőbányai út. In the case of an open crushed stone permanent way next to the platforms, subsequent ballast cementation was planned to facilitate operation and cleaning.

At pedestrian crossings, kerbs were lowered according to the design suggested by the relevant standards.