A shattered windshield deserves prompt attention. Damage can interfere with the view through the glass, and the windshield and its bond have safety roles that depend on the vehicle. Have the damage assessed before deciding whether the vehicle can be driven or which work it needs.
Understand the airbag connection
Some airbag designs use the windshield as a surface to help direct the inflated bag. The glass and its attachment therefore matter to those systems. The details vary by vehicle; a visible crack alone cannot tell you how an airbag would perform in a crash. [A]
Airbags inflate after the restraint system signals an inflator. They do not need broken glass to trigger them. Always wear your seat belt properly and follow the owner’s manual for seating and airbag precautions. [B]
Keep structural claims in perspective
The windshield can contribute to the vehicle’s structure, but that contribution is vehicle-specific. NHTSA’s roof-crush discussion identifies the windshield as a structural element for some vehicles and notes that breakage did not reduce maximum roof strength in some tests. A fixed percentage of lost roof strength is not a reliable rule for every crack or vehicle. [C]
For a broader overview, read the dangers of a damaged windshield.
Ask whether repair is appropriate
A technician should assess the type, size, location and condition of the damage, together with vehicle guidance. Suitable damage may be repairable; extensive damage or damage outside the applicable limits can require replacement. Repair may leave a visible blemish. Learn more about what windshield repair can do. [D]
Plan the next step
If damage blocks your view or the glass appears loose, avoid driving and ask a qualified professional how to arrange assessment or transport. Do not judge the windshield’s attachment by appearance alone.
If replacement is recommended, ask which glass and installation procedure apply to your vehicle. Follow the installer’s minimum drive-away time and confirm any manufacturer-required camera calibration. Our overview explains what happens during windshield replacement. [E]