What is the Minimum Speed Limit in Turkey?

In Turkey, speed regulations are governed by the Turkish Highway Traffic Regulation published by the General Directorate of Highways (KGM). While most drivers focus on maximum speed limits (azami hız), the law also establishes a minimum speed limit (asgari hız). Driving too slowly can be just as dangerous as speeding, as it disrupts the natural flow of traffic and forces other drivers to brake abruptly or make risky overtaking maneuvers. Under Turkish law, the minimum speed is the lowest velocity at which a vehicle may legally travel on a specific road under normal traffic, weather, and vehicle conditions.

Identifying the Minimum Speed Sign

To pass your Turkish theory exam (ehliyet sınavı) and drive safely on Turkish roads, you must be able to visually identify the minimum speed limit sign. Unlike maximum speed limit signs, which feature a black number inside a red-bordered white circle, the minimum speed limit sign is a circular blue sign with a white number in the center. The number indicates the minimum speed in kilometers per hour (km/h) that you must maintain. When you see this sign, you are legally obligated to drive at or above the designated speed unless conditions prevent you from doing so safely.

General Minimum Speed Regulations on Turkish Highways

According to Turkish traffic legislation, there are general default minimum speeds applied to different road classes:

• Motorways (Otoyol): Motorways have strict minimum speed limits to maintain high-speed corridor safety. On Turkish motorways, unless specific signs state otherwise, the default minimum speed for motor vehicles is 40 km/h.
• Intercity Highways: On intercity highways (şehirler arası kara yolları), the general default minimum speed is set at 15 km/h for motor vehicles, unless a hazardous situation or specific road sign dictates otherwise.

Vehicles that cannot legally or mechanically achieve these minimum speeds are strictly prohibited from entering motorways to prevent severe multi-vehicle collisions.

Legal Exceptions: When Can You Drive Slower?

Safety is the ultimate priority in Turkish traffic rules. Under Article 52 of the Turkish Highway Traffic Regulation, drivers must adjust their speed based on several factors, which means you are legally permitted—and required—to drive below the minimum speed in the following situations:

1. Adverse Weather Conditions: In the presence of heavy rain, snow, ice, or dense fog, you must slow down to maintain traction and visibility, regardless of any posted minimum speed.
2. Traffic Congestion: If traffic has slowed to a crawl or a complete standstill, you must follow the flow of traffic.
3. Road Hazards and Construction: When approaching roadworks, narrow bridges, sharp bends, intersections, pedestrian crossings, or active accident scenes, speed must be reduced to ensure maximum control.
4. Vehicle Malfunctions: If your vehicle experiences a technical issue, you should safely navigate to the emergency lane (emniyet şeridi) or the nearest exit while using your hazard lights.

Why Minimum Speed Matters for Road Safety

Driving significantly below the speed of surrounding traffic creates a 'rolling roadblock'. Faster vehicles approaching from behind may not anticipate a very slow vehicle, leading to high-impact rear-end collisions. The minimum speed rule ensures predictability on high-speed routes, keeping transit efficient and preventing sudden lane changes by drivers trying to bypass slow-moving hazards.

What to Expect on the Turkish Driving Theory Exam

In the official Turkish e-exam (MTSK e-sınav), questions regarding minimum speed typically test your recognition of the blue circular traffic sign and your understanding of legal exceptions. You may be presented with a scenario where a driver is traveling slowly in clear weather on a motorway and asked if this is an infraction. Remember: unless there is a valid hazard, weather condition, or traffic jam, driving below the minimum speed limit is prohibited and subject to traffic fines and penalty points.