What is the maximum size for an acceptable sticker/decal on the front windshield?

The maximum size for an acceptable sticker or decal on the front windshield is 4"x6". This size conforms to regulations that aim to ensure visibility and safety on the road. Stickers that are too large can obstruct the driver's view, potentially creating dangerous situations while driving. The 4"x6" dimension strikes a balance between being sufficiently visible for identification purposes while not intruding excessively into the driver's line of sight. Adhering to this standard is crucial for maintaining clear visibility and complying with safety inspection requirements.