There are magnets with different powers. Neodymium magnets are very strong.
The magnets are also differentiated according to the intended use.
This is what they call magnets that sit on the steering lever of Car System models.
Magnets for street
|1mm thick 3 mm width Magnetic wire Streetsystem||teilweise||no||yes||yes|
|3 mm thick 3 mm width Magnetic wire Mader||partly||partly||yes||yes|
|3 mm thick 6 mm width Magnetic wire Mader||partly||yes||yes||yes|
Reed switches are pre-magnetized in order to react to a certain polarity.
They are built into the layout to stop DC cars with millimeter precision.
This is used to keep flaps closed or other components to be held together.
E.g. cover on a vehicle or trailer on the traction engine.