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Operations Improvements, Projects, change management, operating techniques, subway

Chicago Orange Line One Person Train Operation

As a Principal Planner at the Chicago Transit Authority (CTA) in the early 1980’s, Mr. Gaul was assigned to the Orange Line design project. He initiated the planning efforts that allowed for the implementation of One Person Train Operation (OPTO) on the new line. Although CTA had pioneered...

Data Analysis, Projects, subway

Using Time-Space Diagrams for Real-Time Service Regulation

The NYCT subway punctuality is a key performance measure for the Operational Planning department. The traditional schedule timesheet and manual “punch in” method can’t meet the requirement of quick reaction upon the unexpected train delay.  Mr. Reddy and his team developed the real-time Time-Space diagrams to mitigate this...

Data Analysis, Projects, bus, data analytics, performance, subway

Massive Simulation in Performance Metrics to Capture Passenger Experience

As data collection for public transportation improves and customers’ appetite for information grows, there has been a growing interest in performance measurement systems that better reflect customer experience and quantify the impacts of service while accounting for ridership. A fair amount of research has been dedicated to developing...

Data Analysis, Projects, automatic vehicle location, signal system, subway

Development of Real-Time Transit Delay Map Visualization Tool

The signal system on NYC Transit’s “B” Division (with the exception of CBTC on L line) was installed in phases during the Great Depression and currently in the process of modernization and would take a few more years. All signals operated on relay logic and it was impossible...

Data Analysis, Projects, automated fare collection, data analytics, scheduling/service planning, signal system, subway

Subway Service Adjustment in Response to COVID-19 Ridership Changes

The New York City metropolitan area was hard hit by COVID-19, and the pandemic brought with it unprecedented challenges for New York City Transit.  Previously dependable approaches to monitor ridership suddenly became unavailable (e.g., local bus payment data, field checks).  We were tasked to quickly modify existing processes to...

Planning & Management, Publications, bus, operating techniques, performance, signal system, subway

Using Real-Time Data to Detect Delays and Improve Customer Communications at New York City Transit

New York City Transit operates one of the world’s largest transit systems, and it can be difficult for the agency’s communications team to keep track of the numerous service disruptions that need to be communicated to customers. This paper introduces the Transit Visualization tool, which processes real-time train...

Planning & Management, Publications, automated fare collection, bus, scheduling/service planning, subway

An Examination of New York City Transit’s Bus and Subway Ridership Trends during the COVID-19 Pandemic

The New York City metropolitan area was hard hit by COVID-19, and the pandemic brought with it unprecedented challenges for New York City Transit. This paper addresses techniques used to estimate dramatically changing ridership, at a time when previously dependable sources suddenly became unavailable (e.g., local bus payment...

Data Analysis, Projects, automated fare collection, automatic vehicle location, bus, data analytics, performance, signal system, statistical sampling, strategy, subway

Benchmarking of Key Transit Performance Indicators

A large transit agency’s cost of operations per passenger, per hour, and per mile was discerned to be very high.  It sought to explore how practices differed from other operators.  Understanding how one’s own system performs against similar peer properties is valuable in deciding on changes in transit...

Data Analysis, Projects, automated fare collection, data analytics, signal system, subway

Real-Time Estimation of Platform Crowding

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, Projects, data analytics, performance, signal system, subway

Tracing Train Delays to Incident Causes

Knowledge of the root causes 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...

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