adriver may pass another vehicle when safe if

A driver may pass another vehicle when it is safe and legal , meaning there are no oncoming vehicles, the road markings allow it, and the driver can complete the maneuver without exceeding the speed limit or endangering others.

When passing is allowed

In most U.S. states, you may pass when:

• The lane‑change is legal (e.g., a broken‑line or passing‑permitted section, not a solid “no‑passing” zone).

• You have clear visibility ahead (no hills, curves, or blind spots) and enough distance to return to your lane before meeting oncoming traffic.

• There is sufficient space to pass and then move back in front of the other vehicle, often judged by being able to see the passed car’s front in your rearview mirror before merging.

Basic safety rules

• Pass on the left unless a specific situation allows a right‑side pass (for example, when the vehicle ahead is turning left and you have room to pass on the right).

• Do not exceed the speed limit just to pass; if you must speed up too much, it is safer not to pass.

• Signal your intent, check mirrors and blind spots, and avoid passing near intersections, railroad crossings, or areas with limited sight distance.

If you tell me your state or country, the answer can be tailored to that jurisdiction’s exact wording (for example, “a driver may pass another vehicle when safe if ___” as it appears on a written‑test question).