What characteristics are used to evaluate whether a pavement should be rehabilitated?

• A. Roughness
• B. Distress
• C. Skid resistance
• D. All of the above

Answer: (D)

When evaluating whether a pavement should be rehabilitated, multiple characteristics play a crucial role in determining its condition and the need for maintenance or repair. Each of the factors listed contributes to the overall assessment of pavement performance and safety.

Roughness refers to the unevenness of the pavement surface, which can impact ride quality and comfort for drivers. If the pavement is significantly rough, it can create a frustrating driving experience and may lead to increased wear on vehicles.

Distress encompasses a variety of pavement failures, such as cracking, potholes, and raveling. Identifying the type and extent of distress is vital in determining the appropriate treatment methods and the urgency of the rehabilitation needed.

Skid resistance is vital for ensuring safe vehicle operation, particularly in wet conditions. Pavements that lose their skid resistance can significantly increase the risk of accidents. Maintaining adequate skid resistance levels is essential for the safety of drivers and pedestrians alike.

Therefore, all these characteristics are interconnected and provide a comprehensive view of the pavement's condition. Evaluating roughness, distress, and skid resistance collectively helps engineers make informed decisions regarding pavement rehabilitation needs. Each factor is integral to ensuring the sustainability, safety, and functionality of the roadway.