Your speed is crucial to the difficulty level of your driving. With a properly adapted speed, you have more time to plan your driving, your awareness increases and other road users have more time to discover you.
You must always maintain a speed adapted to the current traffic situation, taking into account visibility, the road and road surface, the condition of your vehicle, other road users and general traffic conditions.
You must also adapt your speed so that you always have control over your car and are able to stop within the part of the road that you can overlook and in front of any obstacles that can be foreseen.
Keep in mind that a speed limit indicated on a road sign does not necessarily mean that it is appropriate to drive at that speed. The road sign only states that you must not drive at a higher speed than that indicated on the road sign.