The Middle Corridor and Türkiye in the Restructuring Process of Trade Routes
Global supply chains have been undergoing a profound transformation in recent years due to structural crises and route security issues. Following the Russia-Ukraine war, the Northern Corridor (Siberian Line) has become the focus of Western sanctions, while the Southern Corridor (Suez Canal) faces increasing vulnerability due to geopolitical tensions in the Red Sea. These challenges are forcing international trade to permanently adopt alternative routes. At the center of this search lies the Trans-Caspian International Transport Route, known as the Middle Corridor, which stands out as the most rational logistics line between Asia and Europe.
Operational Framework and Time Advantage
The Middle Corridor is a multimodal transport line originating from China and passing through Kazakhstan, the Caspian Sea, Azerbaijan, and Georgia to reach Türkiye, from where it connects to Europe. The fundamental parameter that sets apart this route from its competitors is the balance between duration and logistics costs.
While it takes an average of 35 to 45 days for cargo leaving China to reach European ports via the sea route (Southern Corridor), the Middle Corridor can reduce this period to under 15 days, thanks to the Baku-Tbilisi-Kars (BTK) railway line and the Marmaray connection. Furthermore, while the hard winter conditions of the Northern Corridor in the Siberian region adversely affect operational sustainability, the Middle Corridor offers uninterrupted shipping opportunities 12 months a year in a more favorable climate zone.
Strategic and Economic Impacts from Türkiye's Perspective
Türkiye forms the western border and the final customs gateway of the Middle Corridor opening to Europe. This position provides the country with multi-dimensional advantages beyond being merely a transit passage zone:
Customs and Logistics Revenues: The increased functionality of the corridor translates into direct foreign currency inflows through port operations, customs clearance services, warehousing, and logistics center activities. Infrastructure investments convert into commercial gains as the transit trade volume expands.
Reduction of Third-Country Dependency: The route enables Türkiye to conduct its trade with Central Asia and the Caucasus without being blocked by the non-tariff barriers or political conjunctures of countries such as Russia or Iran. This situation directly supports economic integration within the framework of the Organization of Turkic States (OTS).
Green Logistics and Tax Advantages: In line with the European Union's Green Deal objectives, the carbon footprint in the logistics processes of export products has become a critical customs and taxation criterion. The fact that the Middle Corridor shortens the distance compared to the maritime route and relies heavily on railways provides Turkish exporters with a carbon tax advantage and enhanced competitiveness in the EU market.
Regional Hub Role: The Middle Corridor possesses the potential to integrate with the Development Road Project, which originates from the south and aims to connect the Persian Gulf. Situated at the intersection of these lines, Türkiye can accelerate its positioning by global production giants as a "near-shoring" and distribution hub.
Requirements and Shortcomings for Full Capacity Operation
For the Middle Corridor to become a fully dominant alternative to the Northern and Southern corridors under current conditions, certain operational, infrastructural, and bureaucratic bottlenecks must be resolved. To ensure the sustainability of the line, it is essential to meet the following requirements:
Optimization of the Caspian Sea Crossing (Chokepoint): The weakest link of the corridor is the Caspian Sea crossing, where transport shifts to maritime transit. The lack of capacity in Ro-Ro and vessel charter at the ports of Aktau (Kazakhstan) and Baku (Alat/Azerbaijan) leads to extended handling times at the ports. This situation occasionally puts the "15-day" time advantage at risk. Increasing fleet capacity on the Caspian Sea and modernizing port infrastructures constitute the primary requirement.
Harmonization of Customs and Regulations (Single Type Document): The high number of countries along the route brings about the application of diverse customs legislations and control processes. For the smooth flow of the corridor, a structure similar to the Common Transit Procedure should be operated in transit passes, and the single transport document (CIM/SMGS common transport document) along with digital customs integrations (e-TIR, e-Waybill) must be fully implemented by all transit countries. Unless bureaucratic delays are reduced, physical infrastructure alone remains insufficient.
Relieving the Railway Infrastructure from Single-Track Bottlenecks: The fact that operations are still carried out on a single track in certain sections of the Baku-Tbilisi-Kars railway line creates congestion for oncoming train crossings. Upgrading the railways to double tracks, modernizing signaling systems, and completing electrification processes by Türkiye and other countries on the route will significantly increase transport capacity. Additionally, wagon/wheel change processes resulting from different track gauge standards should be accelerated at the stations.
Tariff and Price Alignment: Predictability is essential for cargo owners and logistics companies. Countries along the Middle Corridor (especially railway administrations) need to adopt a joint and competitive pricing policy (block train tariffs) in transit transport. Arbitrary costs and additional fees that vary from country to country make it difficult for the line to gain a cost advantage over the maritime route.
In conclusion, the Middle Corridor has evolved from being a theoretical alternative into one of the core building blocks of global trade. For Türkiye, this line supports the vision of becoming a regional rule-maker in customs, logistics, and foreign trade processes. Once the logistics bottlenecks at the Caspian crossing are resolved, customs processes are simplified through digitalization, and block tariff alignment is achieved, Türkiye will maximize the economic value it derives from this corridor.
This assesment has been prepared by taking into account current geopolitical and trade developments, along with global projections