What is the minimum height for traffic cones to be effective?

Prepare for the ATSSA Traffic Control Supervisor Test. Study with flashcards and multiple-choice questions, with hints and detailed explanations for each question. Ace your exam!

The minimum height for traffic cones to be effective is 28 inches. Traffic cones are used to guide and direct motorists as well as to enhance safety in work zones and other temporary traffic control situations. The height of 28 inches provides sufficient visibility to drivers, ensuring that the cones can be seen from a distance, even under poor weather conditions or at night when illuminated by vehicle headlights. This height strikes a balance between being noticeable to motorists while still being manageable for deployment and placement by workers. Moreover, standardization in traffic control devices helps maintain consistency, making it easier for drivers to discern and react appropriately to these devices.

The 24-inch option falls short in height, which may not be adequate for effective visibility, especially in higher speed areas. The higher options, such as 32 and 36 inches, while potentially more visible, are not typically required, leading to unnecessary additional cost and complication in specifying traffic control devices unless specific conditions justify their use.

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