Resources

Lea+Elliott’s professionals stay abreast of transit industry developments and trends. Our team is very active in industry professional organizations and takes a lead role in writing technical papers on innovative transit-related projects and system solutions. We’ve provided links to view our company brochures and information on LEGENDS©, our proprietary family of computer models.

LEGENDS©

LEGENDS© is our sophisticated, proprietary family of computer models, recognized throughout the industry as leading-edge analytic tools. Using the detailed graphical output generated by LEGENDS©, Lea+Elliott professionals assess critical components of a transit system, pinpoint possible trouble spots, analyze costs, and make recommendations for optimizing system design. For large capital expenditures, modeling is invaluable since realistic variances can be applied to mimic real-life conditions.

LEGENDS© is an integrated family of models used by Lea+Elliott to analyze and evaluate all aspects of transport system performance and cost. The software helps confirm projected system ridership, system capacity, passenger travel times, platform capacity, vertical circulation requirements, energy consumption, facility requirements, failure management, capital and operating costs, and staffing requirements. The LEGENDS© models are calibrated on a frequent basis and reflect our current experience with various types of transit projects, including driverless and conventional rapid transit, automated guideway transit, and rail transit system design and operational analysis.

Various modules are used to explore specific aspects of a transit system.  Lea+Elliott’s LEGENDS© family includes six modules. These are:

• Train Performance Model - The core of LEGENDS© is a computer-based Train Performance Model that accurately simulates the movement of a bus or train on a fixed route.
• Network Simulation Model - This model analyzes the interaction between multiple vehicles or trains within a transportation system.
• Platform Model - This model evaluates passenger flow and train operations that result from the LEGENDS© Network Simulation Model to determine station platform sufficiency in terms of platform dimensions (length and width) and the number of vertical circulation elements (escalators, elevators and stairs).
• Power Model - This model provides system power demand by time increments throughout a typical day, electrical current drawn by trains, voltage readings at locations throughout the track network, and power substation locations and sizing requirements.
• Capital Cost Model - This model is used to develop a capital cost estimate based on historical unit cost data.
• Operation and Maintenance Cost Model - This model provides a "bottom up" estimate of the O&M costs of the proposed system.