HGS and OGS Explained: How Tolls Work in Turkey

Turkish highways are among the best-maintained in the region, and the country has invested heavily in an electronic toll collection system that — once you understand it — makes long-distance driving genuinely seamless. Here is how it works, and what it means for your Auris rental.

The Two Systems: HGS and OGS

Turkey operates two electronic toll systems that have coexisted for years, though they are now functionally integrated for most users:

HGS (Hızlı Geçiş Sistemi — Fast Passage System) is the standard system. It uses a small passive RFID sticker affixed to the inside of the windscreen, typically near the rearview mirror. As your vehicle passes through a toll gate at any speed, antennae in the gate read the tag and deduct the toll amount from a linked account. You do not need to slow down, open a window, or interact with any machine.

OGS (Otomatik Geçiş Sistemi) is an older transponder-based system largely superseded by HGS. If you see an OGS-only lane at a toll gate, it refers to larger vehicles with dedicated transponders. For passenger rental cars, you only need to know about HGS.

How Toll Gates Work

Toll gates have three lane types: cash lanes (manual payment), HGS lanes (faster, marked with the HGS logo and blue background), and combined lanes accepting both. On newer highway sections, all lanes are HGS-only with no manual booths — the toll is purely electronic.

If you drive through an HGS lane in a vehicle without a valid HGS tag, cameras record your plate and a violation fine is issued to the registered owner — which for a rental car means the rental company, which then charges it back to the renter, typically with an administration fee.

The Roads That Require HGS

The main toll roads are the O-series motorways (otoyols):

• O-1 and O-2 (Istanbul ring roads): the 15 July Martyrs Bridge is on the O-1 and the Fatih Sultan Mehmet Bridge is on the O-2 (TEM)
• O-5: Gebze to İzmir, including the Osmangazi suspension bridge, one of the more expensive single tolls
• O-4: Istanbul–Ankara route via Kocaeli, Sakarya and Bolu
• O-7: the northern Marmara motorway, including the Yavuz Sultan Selim Bridge and the link to Istanbul Airport
• The Eurasia Tunnel under the Bosphorus is also HGS-only

How Much Are the Tolls?

Toll amounts change from time to time and differ by crossing, direction and vehicle class, so this guide does not quote figures. Check the current tariff of the operator or the General Directorate of Highways before a long trip, and add the tolls to your trip budget.

What to Confirm With Auris

HGS tolls are electronic; confirm at booking how the HGS toll tag is handled for your car and how toll usage is billed. Ask how toll charges are billed after the rental, whether an administration fee applies, and get the answer in writing.

If you will be driving a high-toll route such as Istanbul to İzmir via the Osmangazi Bridge, ask about the expected toll cost when you book so there are no surprises on your invoice.

One request: do not remove or cover the HGS sticker during your rental. It is positioned precisely for gate readers, and displacement causes read failures.