When observing another driver entering a controlled-access highway, what should you do?

When another driver is entering a controlled-access highway, it is essential to facilitate their entry safely. By moving over to your left, you create space on the right for the merging vehicle, allowing them to merge smoothly without needing to adjust their speed drastically. This action helps prevent potential collisions and promotes safer driving conditions for everyone.

It is important to be aware that while maintaining your speed might feel intuitive, it can actually hinder the merging driver, especially if they are accelerating to match your speed. Speeding up to cut in ahead of them disrupts the flow of traffic and creates unsafe situations. Moving over to the right would not be conducive to helping the merging vehicle enter properly, as this would leave insufficient space for them.