Which controls are typically mounted opposite the longitudinal reference systems and maintain the proper transverse cross slope regardless of wheelbase deviations?

• A. Automatic Grade Controls
• B. Auger Extensions and Retention Plates
• C. Longitudinal Joints
• D. Automatic Screed Controls

Answer: (A)

Automatic Grade Controls are designed to keep the pavement surface at the intended grade and cross slope by actively adjusting the screed on both sides. Because the longitudinal reference sensors define the direction along the paver, mounting the cross-slope control opposite that reference lets the system measure how the surface sits across the width and corrects for any wheelbase deviations or unevenness as the machine moves. In practice, sensors compare the actual cross slope to the target and hydraulically adjust the screed height to maintain the desired transverse slope, ensuring consistent drainage and surface quality across the mat. This direct handling of transverse slope and compensation for wheelbase effects is what makes automatic grade controls the best choice for this scenario.