On a push button machine, where are the call-on buttons located?

The call-on buttons on a push button machine are located in a cluster above or below the track diagram. This arrangement allows operators to have a clear visual relationship between the call-on buttons and the track diagram they are managing. It is designed for optimal efficiency, ensuring that an operator can quickly reference the status of the track while easily accessing the buttons to control the flow of traffic or operations. By positioning the buttons in this manner, operators can respond to calls and manage operations without needing to look away from the information provided by the track diagram.