Start With Visibility and Safety
If the crack crosses the driver’s normal field of view, creates distracting reflections or distortion, or the glass appears unstable, avoid driving until the windshield can be evaluated. A crack that suddenly spreads can make an already poor viewing situation worse.
If loose glass, severe impact damage or a major structural break is present, do not keep driving simply to reach a repair shop. Ask whether mobile service is available.
Windshield Laws and Inspection Requirements Can Change
Vehicle-equipment and visibility rules can be updated, and the legal effect of a specific crack can depend on its location and severity. This page should not be treated as a legal determination that a particular windshield is permitted or prohibited on Tennessee roads.
For a current legal question, check the applicable Tennessee requirements or ask an appropriate state or law-enforcement resource.
Signs You Should Stop Driving and Arrange Service
- The crack blocks or distorts your view of traffic
- The windshield is shattered or separating
- A crack is spreading quickly toward the edge
- Loose glass is present inside or outside the vehicle
- The damage affects a camera or sensor area and warning messages appear
Protect a Small Crack Until It Is Evaluated
Avoid rapid temperature changes, rough impacts and pressing on the damaged area. Keep the damage reasonably clean and dry, but do not fill it with household glue or other products that can interfere with professional repair.
Request an evaluation promptly because a chip or short crack may become more difficult to repair after it spreads or becomes contaminated.