Seven-Car Crash Injures Multiple Drivers on Highway 99

Seven-Vehicle Crash Causes Injuries on Highway 99 in FresnoFresno, CA — On Thursday afternoon, December 4, 2025, a multi-vehicle collision involving seven cars and trucks occurred in the southbound lanes of Highway 99 near Ashlan Avenue in Fresno. Preliminary reports indicate the crash happened around 3:45 p.m., resulting in significant vehicle damage and multiple injuries. Several drivers and passengers were transported to area hospitals, and early updates suggest they are expected to recover. Traffic in the area was heavily impacted while first responders secured the scene, provided medical aid, and worked to clear debris. Investigators continue to examine the sequence of events and contributing factors.What We Know So FarInitial accounts describe a chain-reaction collision across the southbound lanes during a busy late-afternoon period. Multi-vehicle crashes of this scale often begin with a sudden stop or unexpected lane change, followed by a rapid series of rear-end or sideswipe impacts. Some of the vehicles involved sustained major damage. Authorities urged motorists to avoid the stretch of Highway 99 near Ashlan Avenue until the scene was cleared.As of the latest updates, no fatalities have been reported. Multiple individuals received medical care at local hospitals, and all are expected to recover. The investigation is ongoing, and additional details—such as the number of occupants, the initial trigger for the crash, and any potential citations—may be released by authorities in the coming days.Why Multi-Vehicle Collisions Happen on Highway 99Highway 99 is one of California’s busiest corridors, with frequent congestion, high freight traffic, and numerous interchanges. Those conditions can create a setting where a single error quickly cascades into a multi-vehicle pileup. Common contributing factors in multi-car collisions include:- Sudden braking and tailgating: Following too closely leaves little room to stop safely in heavy traffic.- Distracted driving: Even a brief glance at a phone or dashboard screen can delay reaction times.- Speeding or unsafe speed for conditions: Traveling too fast for traffic or road conditions can make avoidance impossible.- Aggressive or improper lane changes: Quick merges or cutting across lanes can trigger abrupt braking and sideswipes.- Visibility limitations: Glare, dusk lighting, and obstructed sightlines can make it difficult to detect slowing traffic.- Mechanical issues: Tire blowouts or brake failures can initiate unexpected hazards.While investigators will determine the specific causes in this incident, understanding these common risks can help drivers reduce the chance of being involved in similar chain-reaction events.Injuries Commonly Seen in Chain-Reaction CrashesSeven-vehicle collisions often result in a range of injuries, even at moderate speeds. These can include:- Whiplash and soft-tissue strains- Concussions and other traumatic brain injuries- Fractures and dislocations- Back and spinal injuries- Internal injuries due to seatbelt force or airbag deployment- Cuts, bruising, and secondary injuries from broken glass or loose objectsIf you were involved in this crash—or any multi-vehicle incident—seek medical evaluation as soon as possible. Some injuries may not be immediately apparent, and documenting symptoms early protects