When you are passing another vehicle, pedestrian, or bicyclist, you should assume that:

Assuming that other road users, such as vehicles, pedestrians, or bicyclists, may move into your traffic lane is crucial for maintaining safety while passing. This assumption allows you to remain vigilant and prepared for any unexpected actions from those you are overtaking. Drivers must recognize that pedestrians and cyclists may not always be aware of your intentions, and vehicles may shift unexpectedly due to various factors such as distractions or road conditions.

By adopting the mindset that these road users could change their position, you increase your chances of avoiding potential collisions. It encourages a defensive driving approach, reminding drivers to maintain a safe distance and be prepared to react if another user moves into their path. This proactive mindset is essential for safe driving practices.