What is the maximum angle deviation allowed for signage to ensure it is effectively read by drivers?

The maximum angle deviation allowed for signage to be effectively read by drivers is less than 10 degrees. This standard is based on research regarding human visual perception and the way drivers process information while they are on the road. When signage is positioned at a steep angle, even slight deviations can lead to difficulties in readability, especially at higher speeds.

This rule of thumb ensures that drivers can quickly and easily comprehend important messages without having to swerve or brake unexpectedly. Signage that adheres to this angle helps maintain the flow of traffic and enhances safety on the road by providing clear and immediate information to the driver, thus reducing the chances of misinterpretation or distractions that could lead to accidents.

If signage were placed at angles greater than 10 degrees, it may not be perceived efficiently, leading to potential hazards as drivers may not react appropriately to critical information.