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Operations Improvements, Projects, automated fare collection, data analytics, operating techniques, performance, signal system, subway

Service Intervention Recommendation Engine

SIRE is a web-based real-time decision support tool for dispatchers in the Rail Control Center (RCC). It assesses the current locations and movement patterns of trains, factors in typical ridership patterns, and recommends actions dispatchers should take (e.g., holds, skips) to improve service to maximize the benefit to...

Operations Improvements, Projects, change management, data analytics, infrastructure, investment planning, journey time reduction, operating techniques, performance, signal system, statistical sampling, subway

Train Speed & Safety Task Force

The Reddy Analytics team members were instrumental in providing irrefutable evidence from signal system data that demonstrated the dramatic and immediate impact of recalibrating “grade timers” on one of the busiest rapid transit systems in the nation.  At the time, there was a debate internal to the transit...

Data Analysis, Publications, operating techniques, signal system, subway

Automated Train Identification and Train Position Monitoring at New York City Transit

Like any legacy subway system that first opened in the early 1900s, the New York City subway system operates using technology that dates from many different eras. Although some of this technology may be outdated, efforts to modernize are often hindered by budgetary limits, competing priorities, and managing...

Operations Improvements, Publications, data analytics, subway

Algorithm for Tracing Train Delays to Incident Causes

Knowledge of the root cause(s) of delays in transit networks has obvious value; it can be used to direct resources toward mitigation efforts and measure the effectiveness of those efforts. However, delays with indirect causes can be difficult to attribute, and may be assigned to broad categories that...

Planning & Management, Publications, performance, signal system, subway

Passenger-Centric Performance Metrics for the New York City Subway

Like many transit agencies, New York City Transit (NYCT) has long relied on operations-focused metrics to measure its performance. Although these metrics, such as capacity provided and terminal on-time performance, are useful internally to indicate the actions needed to improve service, they typically do not represent the customer...

Operations Improvements, Publications, operating techniques, signal system, subway

A Real-Time Service Management Decision Support System for Train Dispatching at New York City Transit

With ridership near modern highs, New York City Transit’s (NYCT) subway network frequently operates at or near capacity. This makes maintaining a high-quality service both challenging, due to the lack of “slack,” and exceptionally important, due to the large number of riders affected by disruptions. To this end,...

Data Analysis, Publications, automated fare collection, signal system, subway

Real-Time Estimation of Platform Crowding for New York City Subway: Case Study at Wall Street Station on No. 2 and No. 3 Lines in Financial District

Amid significant increases in ridership (9.8% over the past 5 years) on the more than 100 year-old New York City Transit (NYCT) subway system, NYCT has become aware of increased crowding on station platforms. Because of limited platform capacity, platforms become crowded even during minor service disruptions. A...

Data Analysis, Publications, automated fare collection, scheduling/service planning, signal system, subway

Time-Expanded Network Model of Train-Level Subway Ridership Flows Using Actual Train Movement Data

Subway ridership estimates are important to transit operators for both internal applications (e.g., setting service frequencies, prioritizing station upgrades) and external reporting (e.g., to the National Transit Database). New York City Transit (NYCT) is developing a new model that will accomplish three primary objectives: (a) estimating subway ridership...

Operations Improvements, Publications, performance, signal system, subway

Development of a Real-Time Stringlines Tool to Visualize Subway Operations and Manage Service at New York City Transit

In 2013, with real-time train arrival data becoming widely available through its general transit feed specification real-time (GTFS-RT) feed, New York City Transit (NYCT) recognized the potential for new service management tools capable of on-the-fly performance visualization and reporting. This paper describes the process taken by NYCT to...

Planning & Management, Publications, data analytics, performance, subway

Designing New York City Subways’ Key Performance Indicators to Improve Service Delivery and Operations

A balanced scorecard (BSC) is widely used in private industry and the public sector to monitor key performance indicators (KPIs) and to help achieve strategic outcomes. This concept is widely used in the transit industry for carrier regulator contractual relationships and performance monitoring. After a fact-finding mission to...

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