Speed bumps with no traffic sign

[Reza]

If a there is a speed bump with no traffic sign indicating here is a speed bump, do I have to drive 30km/h on them?
There are cases where on the ground I see the white lines of speed bump and the raised speed bump itself with no
traffic sign on them or before them (in a distance of 100 m-150 m). Are these still considered speed bumps?

[Reza]

For example, here the Google Street below, I saw a speed bump in Alken area that does not end. What does it mean?
Does it mean I should treat it up to the next junction?
Here is the Google Street view, I have also seen it in person and indeed it does not end.
https://maps.app.goo.gl/5esZCB3CE9pbaxkQA

[GRO]

It is an elevated structure at an intersection. 30 kph.

[Reza]

Where will it end? After the intersection? In the particular example I posted, it does not end anywhere after its start, so I assume it is only up to the intersection.
Moreover, the road perpendicular to it, does not have the speed bump and a driver after turning left, will see the end of the speed bump without seeing its start in their path.

[GRO]

Look very well, you can see on the picture where it ends.