To merge onto a road using an **acceleration lane**, it is essential to do so at a **speed appropriate to the road**. This means adjusting your speed to safely integrate with the existing traffic flow, avoiding becoming an obstacle or causing danger to other drivers.

- **R.S.M. safety rule**: When entering a road, it is crucial to observe, signal, and execute the maneuver at a speed that does not endanger other vehicles or pedestrians. The speed should allow for a smooth and safe merge.

- **Adaptation to traffic**: When merging, it is important to adapt to the speed of the vehicles already traveling on the road. This helps avoid risky situations and facilitates a smooth entry into the traffic flow.

- **Avoid extreme speeds**: It is not appropriate to enter the road at the minimum or maximum allowed speed, as this could cause dangerous situations. The speed should best suit the traffic and road conditions at that moment.

In summary, when using an acceleration lane, the key is to adjust your speed to integrate safely and efficiently with the existing traffic, thus ensuring safe driving for everyone.