Quadruple Track - Disadvantages of Quadruple Track

Disadvantages of Quadruple Track

• Quadruple track costs more due to requiring more materials and increased land acquisition costs. This also applies to tunneling and bridge costs.
• When adding tracks, land acquisition can become prohibitively expensive.
• Maintenance costs are higher and often more complex as there may be more switches (points) on the track than on a two-track line (to facilitate switching from outer to inner tracks and vice versa).
• For safety, grade separations are almost always required.