Expanded_Atlantic_Express_System my mapping the larger system that Rapture would need to have . Improved design used to replace much of the original Atlantic Express Train system. Structural Corrections (over AE Mk1) : * More Robust structure (correcting deficiencies in original concrete track design) * Major repairs/replacement of track worn out by City Construction Improvements : * Additional Capacity - passenger and freight * Greater Speeds * Less Maintenance (cheaper, less failures) Diagrams : . . .