What is the right course of action now?

When approaching a junction where a police officer is directing traffic, the primary goal is to ensure safety and follow instructions correctly.

1. Crossing over the junction carefully is essential because it indicates awareness of your surroundings and a commitment to safety. This is particularly relevant if the officer isn't directing you to stop.

2. If the situation requires waiting for further instructions from the officer, patience is crucial. This is often the case when traffic flow is managed manually for safety reasons.

3. Allowing the blue vehicle to move first might also be necessary if it's clear that the vehicle has the right of way, which can happen often at intersections.

Understanding these options involves recognizing traffic rules about right of way, the authority of a police officer in directing traffic, and the importance of being alert and responsive in potentially complex driving situations. Following the correct combination ensures that you comply with the law while maintaining safety for all road users.