What other forms of train working are used on IR other than the block system?
IR on occasion uses the following systems of train working: Following trains system In this system, trains are worked between two stations by dispatching them one after the other (all in the same direction) at specific intervals (generally at least 15 minutes). The trains are run at specific speeds (less than 25km/h). This ensures that there should only be one train in every 5km stretch in the section between the stations. The maximum number of trains simultaneously present in the section is restricted to 4. Trains are dispatched only after the station masters of both stations have been in communication and have agreed upon the number and timing of the trains. The driver of a train being dispatched in this system must carry written authorization (Authority to Proceed, Following Trains System) specifying the destination, speed, and details of preceding and following trains on the section. This system was introduced in many areas as an emergency measure in 1941 in order to cater to the u
