Safety

A Cyber-physical Systems Approach to the Design of Vehicle Safety Networks

Fallah, Yaser P.
Raja Sengupta
2012

The concept of cooperative vehicle safety (CVS) is based on cooperation of vehicles in achieving real-time situation awareness for the purpose of safer (and possibly autonomous) driving. Since CVS is a safety system, situation awareness has to be real-time with high accuracy. Cooperation in the context of CVS is achieved through vehicular networks that are tuned to the purpose of vehicle state tracking in a neighborhood around each vehicle. In this paper, we describe different methodologies in approaching the design of CVS, and propose a systematic Cyber-Physical Systems approach to the...

Predicting driver destination using machine learning techniques

Manasseh, Christian
Raja Sengupta
2013

In this paper we present a method for predicting the driver's destination with 96% accuracy. Knowing the driver's destination has many useful applications in traffic safety, traffic mobility, and influencing driver behavior. Furthermore, a software application that can predict the driver's destination can reduce the burden on the driver from manually entering the destination address on small-screen mobile devices. Current methods for predicting driver destination do that by predicting the driver's route. Those methods result in 72% accuracy if relying only on GPS traces. By providing...

Drones in Smart Cities: Overcoming Barriers Through Air Traffic Control Research

Foina, Aislan Gomide
Raja Sengupta
Lerchi, Patrick
Liu, Zhilong
Krainer, Clemens
2015

Within the last decade, the recent automation of vehicles such as cars and planes promise to fundamentally alter the microeconomics of transporting people and goods. In this paper, we focus on the self-flying planes (drones), which have been renamed Unmanned Aerial System (UAS) by the US Federal Aviation Agency (FAA). The most controversial operations envisaged by the UAS industry are small, low-altitude UAS flights in densely populated cities - robotic aircraft flying in the midst of public spaces to deliver goods and information. This subset of robotic flight would be the most valuable...

Integrated Multi-Channel Vehicle-Vehicle and Vehicle-Roadside Communications for ITS

Mak, Tony K.
Laberteaux, Kenneth P.
Raja Sengupta
Ergen, Mustafa
2025

This research describes a medium access control (MAC) protocol to Enable multi-channel operation for dedicated short-range communication (DSRC). In particular, we focus on the challenge of supporting potentially high-bandwidth commercial or infotainment communications between vehicle and roadside in hotspots over several service channels, while concurrently enabling time-critical vehicle-vehicle communication for safety in a separate channel. In our architecture, within hotspots, communication is aided by one of the access points in the hotspot. This access point is designated the...

Proactive, Reactive, and Interactive Risk Assessment and Management of URET Implementation in Air Route Traffic Control Centers

Uang, Grace
Jasenka Rakas
Bolic, Tatjana
2008

The current trend within air traffic management (ATM), as a part of the Next Generation Air Transportation System (NextGen), is to increase the airspace system capacity to operate in diminishing capacity conditions while improving standards of safety. An extensive body of research exists regarding introducing automation into air traffic control in order to create more flexible and cost-efficient operations. The User Request Evaluation Tool (URET) is a strategic support tool designed to assist controllers with timely detection of conflicts; it offers tools for checking the conflict...

Data link Technology for Contingency Management in Super Density Airspace Operations

Jasenka Rakas
Bauranov, Aleksandar
Cheng, Kevin
Monsalud, Andrew
Hayashi, Miwa
2014

Contingency management in SDO is achieved by combining: 1. existing technologies, concepts and software (ERAM, ADS-B, AAR, Biomimicry), and 2. newly developed models (DFDI, Conflict Resolution and Mixed-mode communications for Flight Formation). The proposed concept is demonstrated in 2D and 3D environments in strategic and tactical situations. Improvements in efficiency, safety and aviation operations are achieved by enhancing usage of DataComm in the NextGen environment.

Characterizing Lightning-Strike Hazard to Airport Facilities

Jasenka Rakas
2019

This article consists of a collection of slides from the author's conference presentation.

Failures of Critical Systems at Airports: Impact on Aircraft Operations and Safety

Jasenka Rakas
Bauranov, Aleksandar
Messika, Benjamin
2018

Failures of critical systems at airports can significantly impact aircraft operations and cause substantial safety risks. This study develops a generalized method for measuring the impacts of unscheduled communication, navigation and surveillance systems outages on airport operational performance (i.e. throughput) and safety. The proposed method consists of two separate models – the aggregate and the disaggregate model. The aggregate model is a regression model that analyzes flight data, which are averaged per quarter hour and obtained from the Aviation System Performance Metrics database...

Characterizing Lightning-Strike Hazard to Airport Facilities: A Case Study of Baltimore Washington International Airport

He, Yiyi
Lindbergh, Sarah
Jasenka Rakas
Graves, C.M.
2019

As projections indicate, the U.S. National Airspace System (NAS) vulnerability to lightning strikes is growing due to increased severity and frequency of convective storms. Lightning hazards pose risks to personnel safety and may cause power outages, and therefore they can impact reliability and performance of the airport's facilities if they are not appropriately fortified. Although lightning-flash data with high temporal and spatial accuracy is available for the continental U.S., measuring airport facility lightning-induced outages remains challenging. Studies have shown that lightning-...

Urban Air Mobility and Manned eVTOLs: Safety Implications

Bauranov, Aleksandar
Jasenka Rakas
2019

New propulsion systems, artificial intelligence, sensor technology, and operational system autonomy are transforming the short to mid-range aviation industry. Electric vertical takeoff and landing (eVTOL) aircraft offer new possibilities for Urban Air Mobility (UAM). However, these developments will create operational issues and safety concerns, especially in the socalled transition period when these aircraft are expected to be manned by pilots, and assisted by onboard automation systems. In this transition period, different aircraft will have different systems for flying. Additionally,...