Singapore Land Transport Authority (LTA)
RAILSIM License

The Land Transport Authority (LTA) of Singapore has procured a site license for SYSTRA's RAILSIM Simulation Software Suite, as a useful tool for their planning and design of public transportation system. The LTA license covers the entire RAILSIM suite of applications, including:

• RAILSIM Editor for infrastructure and operations database development,

• Train Performance Calculator for single train operations and rolling stock simulation and analysis

• Network Simulator for full network simulation and alternatives analysis, including Communications-Based Train Control systems simulation and analysis,

• Load Flow Analyzer for full analysis of both DC and AC electrical networks,

• Headway Calculator, Safe Braking Distance Calculator and Control Line Generator for corresponding specialized system analyses.

SYSTRA USA, in cooperation with its parent company, SYSTRA S.A., provided the software, automated software installation, full documentation, and on site training (with customized training tutorials), along with full software maintenance and user support.

The RAILSIM suite includes simulation and design capabilities for many types of train control systems, including the fixed block and moving block systems employed by the LTA. LTA’s fixed block systems, in service on the North South Line and East West Line use coded track circuits to enforce safe train separation and adherence to speed restrictions. LTA’s moving block systems, in service on the North East Line and planned for the CCL, use continuous communication between trains and the wayside to enforce safe train separation, adherence to speed restrictions and highly-accurate station platform berthing.

RAILSIM’s support for CBTC modeling and analysis includes flexible menu-driven inputs for buffer distances (ahead of and behind each simulated train), communication times and system latency, underspeed settings for typical operation, and guaranteed brake rate settings. The guaranteed brake rate settings can differ for station stopping, civil speed/speed restriction enforcement and train separation. The RAILSIM database also supports site-specific definition of relocalization beacons, the wayside-to-train communications devices that serve to reset any accrued error in each train’s determination of current position on the track. RAILSIM accurately simulates user-specified modeling of accrued positional error and its effect on each train’s performance.