Section 123AD(4) of the Mauritius Road Traffic Act states the relationship between a police officer's direction and a traffic sign. What does it provide?

1. The traffic sign prevails, because it was placed under the Traffic Signs Regulations 1990
2. Any direction given by a police officer shall override a traffic sign
3. The two carry equal weight, and the driver may choose either
4. The officer's direction applies only where no sign has been placed