Emergency responders swarmed the Northern Marmara Highway near Istanbul early Thursday morning following a catastrophic multi-vehicle pileup that left dozens injured. Thick, impenetrable fog blanketed the region, reducing visibility to near zero and triggering a chain-reaction collision involving more than 15 vehicles. The incident occurred during the peak commuting hours, catching drivers off guard as they navigated the high-speed transit artery.

​First responders arriving at the scene described a chaotic environment of mangled metal and shattered glass stretching for several hundred meters. Paramedics worked through the heavy mist to reach trapped passengers while fire crews deployed hydraulic tools to extricate victims from crushed cabins. The sheer scale of the wreckage necessitated the dispatch of multiple ambulances from neighboring districts to handle the high volume of casualties.

​Traffic on the Northern Marmara Highway came to a complete standstill as authorities cordoned off a massive section of the road to allow for rescue operations. Law enforcement officials redirected hundreds of vehicles to secondary routes, causing significant congestion throughout the Istanbul metropolitan area. The fog remained a persistent obstacle for several hours, hampering the efforts of recovery cranes attempting to clear the lanes.

​Hospital officials in the surrounding area were placed on high alert to receive the influx of patients suffering from a range of injuries. Preliminary medical reports indicate that while many sustained non-life-threatening lacerations and fractures, several individuals remain in critical condition. Medical teams are working around the clock to stabilize those most severely impacted by the high-impact collisions. ​Police investigators have begun an on-site analysis to determine the exact sequence of events that led to the initial impact. Witness accounts suggest that a heavy-duty truck slowed down due to the visibility, causing a following passenger car to strike it from behind. This sparked a rapid succession of hits as trailing vehicles were unable to stop in time despite emergency braking. ​The Ministry of Transport has issued a statement urging motorists to exercise extreme caution when driving through the Marmara region during the current weather cycle. Seasonal climate shifts have made sudden, dense fog a recurring hazard for long-distance travelers on Turkey’s northern corridors. Government officials are now reviewing whether additional lighting or early-warning sensors are required for this specific stretch of highway.

​Environmental conditions at the crash site finally began to clear toward the afternoon, allowing for a more thorough damage assessment. Debris removal teams are currently focused on cleaning oil spills and glass fragments to prevent further accidents once the road is reopened. The structural integrity of the highway barriers is also being inspected to ensure they can still function as intended. ​As of the latest update, the Northern Marmara Highway remains partially closed while the final remnants of the wreckage are towed to local holding lots. Authorities have confirmed that the majority of the injured have been processed through emergency departments, and no fatalities have been officially recorded at this hour. The investigation into the pileup is ongoing as forensic teams conclude their data collection.