Determination of the Economic Radii of Horizontal Curves for Suburban Railway Tunnels Positive Impact of El Azhar Road Tunnels on Transport Energy, Environment and Tourism in Fatimid Cairo. Using Creative Electric transportation Modes inside and among Touristic Cities and Their Effects on Energy Consumption Analysis of major causes of accidents in Egyptian NationalRailways and Cairo metro lines The Effect of Design Parameters of Sharp Curved Tracks on Wear and Lifetime of Rails for Cairo Underground Metro Lines كتاب هندسة السكك الحديدية وخطوط المترو Twin tunnel configuration for Greater Cairo metro line No. 4 ANALYSIS OF DIFFERENT LOADS AFFECTING THE URBAN RAILWAY TUNNEL SYSTEMS OF CAIRO METRO UNDERNEATH THE RIVER NILE Seismic Analysis of Urban Tunnel Systems for the Greater Cairo Metro Line No.4 Factors Impacting Transport Mode Choice in Egypt: An AHP Approach Comparison between High-Speed Rail and Conventional Railway Based on Time Saving Criteria: The Case of the Cairo–Alexandria Line Analyzing the Economic and Operational Indicators for Railways: the Case Study of Egyptian Railways Negative Impacts on Railway Embankments Exposed to Wind-Blown Sand and Optimizing the Economic Height Mechanical Testing of Innovated Composite Polymer Material for using in Manufacture of Railway Sleepers INVESTIGATING THE INFLUNCE OF LONGITUDINAL GRADIENTS ON THE MECHANICAL BEHAVIOR OF FASTENING SYSTEMS Major Impacts of Learning Outcomes of Railway Engineering on the Operation Performance Indicators of the Egyptian Railways Cost Estimation for Modernization of Metro Terminal Stations using ANN Technique