How much luminous reflectance is required from sun screening devices?

The requirement for luminous reflectance from sun screening devices is set at 25% or less. This standard ensures that while the devices provide adequate shading and heat reduction, they do not excessively hinder visibility for the driver or create glare that could impact the safety of the vehicle operator and other road users.

By restricting the luminous reflectance to 25% or less, Texas regulations aim to strike a balance between comfort within the vehicle and the essential visibility necessary for safe driving. Higher levels of reflectance could lead to increased glare, making it difficult for drivers to see and react appropriately to their environment. Thus, the specification of this limit is critical for maintaining road safety while allowing for the benefits of sun screening technologies.