When is it permissible to cross a solid white line?

Crossing a solid white line is generally restricted, as solid lines indicate that changing lanes is not advisable. However, it is permissible to cross a solid white line to avoid danger. This means that if there is an immediate hazard that requires a driver to leave their lane for safety reasons—such as an obstacle in the roadway, a sudden stop by the vehicle in front, or any other situation that poses a risk to the driver or passengers—it is acceptable to cross that line to ensure the safety of all road users.

While certain situations, such as making a turn at an intersection or changing lanes, might seem reasonable, they do not justify crossing the solid white line in the absence of immediate danger as defined by traffic regulations. Thus, the nuance in this scenario is that safety takes precedence over standard lane discipline when a danger is present.