The railway line Bigosovo - Kraslava is a section connecting the Belarusian and Latvian railways.
In the 1970s, Lengiprotrans designed a dispatch centralization at the Bigosovo - Kraslava section for 34 switches.
The Riga - Tukums railway line is a section of the Tornakalns - Tukums II electrified line in Latvia.
In the period 1976–1980, Lengiprotrans developed a project for transferring the Riga - Tukums electrified section to telecontrol. The same work was carried out on the Riga-Jelgava section.
Telecontrol devices included:
• telemechanics dispatch center;
• executive points;
• relay devices;
• communication devices.
В 1960–1970 годы «Ленгипротранс» разработал проект участка БАМа Чара — Тында протяженностью около 670 км. Трасса прокладывалась в районе Олекмо-Витимской горной страны через труднопроходимые хребты, расчлененные долинами рек.
The railway line Karaganda - Tselinograd (now Astana) - Atbasar is a section of the Karaganda - Magnitogorsk meridional route, which provides transport links between Kazakhstan and the enterprises of the Ural metallurgy.
The project for the electrification of an AC power frequency line was developed by Lengiprotrans in the 1960s. This was the first work of Lengiprotrans on alternating current electrification.
The railway line Magnitogorsk - Tobol - Zhelezorudnaya - Tselinograd (now Astana) is a double-track line, one of the most important transport routes of the Kazakh SSR. It provided transport links between Kazakhstan and the Urals and the Volga region of Russia.
The line electrification project was developed by Lengiprotrans in 1966-1970. In the same period, the Magnitogorsk - Tobol railway section was transferred to diesel traction.
Riga railway junction is the main railway junction in Latvia, connecting the railway with the commercial sea port on the Baltic coast. The most intensive traffic is carried out in the following directions: Riga - Tukums, Riga - Jelgava, Riga - Aizkraukle, Riga - Sigulda.
During the Soviet period Lengiprotrans participated in the design, development and reconstruction of the stations of the Riga railway junction. In 1986-1990, the institute developed a project for the modernization of communication devices in the Riga node. The cable line was designed.
Kokchetav (Kokshetau) - Novoishimskaya - a section of the former Tselinnaya railway.
The site was electrified using a 2x25 kV AC system under the Lengiprotrans project in the 1980s.
Peski-Tselinnye (now Novoishimskaya) - Presnogorkovskaya - a section of the Presnogorkovskaya - Pavlodar line of the Kazakhstan railway.
The project for electrification of the site was developed by Lengiprotrans in the 1980s. In the same period, the institute designed the second tracks on the line Kokchetav (now Kokshetau) - Peski-Tselinnye - Presnogorkovskaya.
The electrification of the section Kokchetav (now Kokshetau) - Tselinnye Sands (now Novoishimskaya) was developed by Lengiprotrans in 1983. The site was equipped with a contact network.
Within the title were projected:
• at the station Peski Tselinnye: traction substation;
• at Yanko station: traction substation, the main building of the contact network duty station, ground storage of fuels and lubricants, material storage, reinforced concrete pipe; low passenger platforms;
The railway line Leningrad - Zelenogorsk - Roshchino - Vyborg is the main section of the Vyborg direction of the Oktyabrskaya railway.
In the 1950s – 1960s, Lengiprotrans participated in the design of the electrification of the suburban sections of the St. Petersburg railway junction. During these years, the Leningrad - Zelenogorsk - Roshchino line was electrified, and later the electric traction was brought to Vyborg.
