Riders in a staggered formation should move into a single-file formation when:

When riding in a staggered formation, moving into a single-file formation is particularly important when navigating curves. This adjustment enhances safety by allowing each rider more space to maneuver and preventing the potential for sudden contact with another rider, which is a greater risk in sharp turns or when changes in direction are required.

In curves, riders may need to adjust their paths and lean their motorcycles, making a staggered formation less practical and more dangerous. By transitioning to single-file, the group can maintain a more controlled and predictable line, reducing risks and fostering better visibility for each rider.

While riding at night may be a consideration for adjustments in formation, it is not as critical as during curves, where dynamics change significantly due to the required leaning and shifting of weight. Similarly, riding in the left position does not demand a change to single-file. Hence, focusing on curves underscores a fundamental safety practice essential for maintaining a safe riding environment.