Following a minor traffic accident in Singapore involving your motorcycle and another car with no injuries, which of the following actions is a legal requirement?

1. You must not move the vehicles until a police officer arrives at the scene.
2. If both parties agree, you can make a private settlement and are not required to inform your insurers.
3. You must exchange particulars with the other driver and report the accident to your insurer within 24 hours.
4. Only report the accident to the authorities if the total damage appears to be over $1,000.