If you tape up the window with cardboard or dark plastic that completely blocks your rearview mirror's line of sight, a police officer could pull you over for "obstructed vision."
If glass is actively falling out of the frame while you drive, you can be cited for operating an unsafe vehicle or creating a road hazard. 2. The Safety Risks can you drive a car with a broken back window
A broken back window—whether it’s a shattered rear windshield or a missing hatch glass—is more than just an annoyance. It is a safety hazard and a legal gray area. While it might be tempting to drive straight to the repair shop, there are specific risks and regulations you need to consider before turning the key. If you tape up the window with cardboard
Here is a breakdown of the safety concerns, legalities, and necessary precautions for driving with a broken back window. It is a safety hazard and a legal gray area
Almost never. Between the risk of carbon monoxide poisoning, flying debris, police citations, and structural issues, the smartest answer is no. Call a mobile glass repair service or a tow truck. The $50–$300 for a replacement is far cheaper than a hospital bill, a ticket, or a tow.
This is the most overlooked danger. Aerodynamics can cause a "station wagon effect," where exhaust fumes (including carbon monoxide) are swirled toward the back of the car and sucked into the cabin through the open window.
This is the most overlooked and dangerous risk. When you drive forward, a low-pressure area (a vacuum) forms behind your vehicle. If the back window is missing, exhaust fumes—including odorless, deadly carbon monoxide (CO)—can be sucked directly into the cabin.