What is the right course of action?

Your answer is correct because according to German traffic rules, when you approach a situation that requires caution—like an obstacle or hazard ahead—it is important first to reduce speed by braking if necessary. Continuing to brake helps to maintain control and adjust your speed safely.

Secondly, remaining waiting in your lane means you do not immediately steer or change lanes until it is safe to do so. This cautious approach ensures you have full control and can observe the traffic situation ahead and around you, avoiding sudden or unsafe maneuvers.

Steering to the left immediately (option 3) without first braking and waiting can be dangerous, especially if traffic conditions or visibility do not allow a safe lane change. German traffic law requires that lane changes must only be made when it is safe and signaled properly.

Therefore, the right course of action in such scenarios is to continue braking if needed and remain in your lane until it is definitely safe to proceed or change lanes. This approach prioritizes safety and adherence to the rules on proper vehicle control and signalling.