Black Ice

Also known among the public as "Black Ice," this phenomenon is a very thin, transparent, and slippery layer of ice coating the road surface.

• Unlike a normal layer of ice or snow, it is not white or opaque. Since it is transparent, it reveals the color of the black asphalt beneath it. Therefore, drivers assume the road is merely "wet," but the surface is actually covered in ice.
• Distinguishing Feature: It has a shiny, glass-like appearance on the asphalt rather than a matte wet look.

When and Where Does It Occur?

Air Temperature: It occurs when the air temperature is near freezing (0 °C) or drops below it. Evenings when temperatures drop rapidly and early mornings before the sun warms the ground are the riskiest times.

High-Risk Zones:

• Bridges and Viaducts: Because air flows underneath them, they cool down much faster than roads sitting on solid ground and freeze first.

• Shaded Areas: Forested areas where the road is covered by tree shadows, or streets shaded by tall buildings.

• Tunnel Entrances and Exits: Points where airflow and temperature differences (wind tunnel effect) are high.

THE DANGERS AWAITING US

Black ice can be more dangerous than a snowy road because the driver is unaware of the hazard.

• Loss of Friction: Tire grip drops to almost zero.

• Braking Distance: Can increase up to 9-10 times compared to normal dry ground.

• Loss of Control: In sudden maneuvers, the vehicle tends to spin or go off the road.

• Risk of Wrong Reaction: While driving at normal speeds thinking the road is wet, a driver may panic and make sudden maneuvers upon realizing the ice.

Golden Rules

Speed Rules

Adjust vehicle speed according to road and weather conditions. Do not hesitate to travel at low speeds when necessary.

Following Distance Rule

The 3-second rule on dry ground should be considered as at least 6–8 seconds on icy ground.

Sudden Acceleration and Deceleration

Start slowing down before approaching curves or intersections. Position your vehicle before reaching the turning point. Avoid sudden gear changes and movements.

Warning Signs and Road Surface 

Constantly observe the road surface and follow warning signs. Be extra careful when passing through bridges, tunnels, or areas deprived of sunlight.

Vehicle Preparation 

Use tires defined by international standards (M+S, Snowflake) that are sufficient for snow and ice. Ensure tire tread depth and pressure are appropriate. Top up consumables like windshield washer fluid before driving.