Evolution of the number of light signals on the Infrabel network

Annual evolution of the number of large and small stop signals on the Infrabel network.Small or large, what is the difference? Large signals are light signals that are always raised and address either large movements or minor movements. Warning signals are part of this category.Small stop signals are light signals that are installed at ground level and respond to minor movements with fixed white lights.These signals are a very important element for safety and railway traffic management.