What should be done with pavement markings that are no longer needed?

When pavement markings are no longer needed, they should be removed by grinding. This method is effective because it eliminates the markings entirely, ensuring that there is no confusion for drivers regarding the intended road layout. Grinding works by using specialized equipment to remove the top layer of pavement where the markings are applied, which helps to restore the surface to its original state.

Covering the markings with paint could lead to visibility issues or misinterpretation of traffic patterns, as the old markings could still be seen through the new paint. Etching the markings might not provide a complete removal and could still leave behind a residual outline that could confuse drivers. Leaving the markings as is would be inappropriate, as it could mislead drivers and undermine the overall traffic management goals, potentially causing safety hazards. Therefore, grinding is the most effective and reliable method for removing unwanted pavement markings.