what are the differences between the single-track system and the two-track system

The main differences between single-track and double-track railway systems lie in their capacity, operational complexity, and cost:

Single-Track System:

Capacity: Lower capacity for trains. Only one train can be on a section of the track at a time.

Operation: Requires more planning and coordination to avoid train collisions. Trains might need to use sidings (sections of track that allow a train to temporarily move off the main line) to let other trains pass. This can lead to delays.

Cost: Generally cheaper to build and maintain compared to a double-track system due to less material needed.

Double-Track System:

Capacity: Higher capacity for trains. Trains can travel in both directions simultaneously, increasing overall traffic flow.

Operation: Simpler and more efficient operation. Trains don’t need to rely on sidings as much, leading to fewer delays.

Cost: More expensive to build and maintain compared to a single-track system due to double the amount of track needed.