published journal article

Changing objectives for American transit. Part 2. Management's response to hard times

Transport Reviews

Publication Date

October 1, 1983
Suggested Citation
Gordon J. Fielding (1983) “Changing objectives for American transit. Part 2. Management's response to hard times”, Transport Reviews, 3(4), pp. 341–362. Available at: 10.1080/01441648308716536.

conference paper

Estimation of vehicular emissions by capturing traffic variations

Proceedings of the 85th annual meeting of the transportation research board

Publication Date

January 1, 2006

Abstract

Over the past two decades, the fast growth in travel has caused serious traffic congestion, which has made vehicular emissions to increase significantly. However, it is difficult to accurately estimate and quantify emissions using the current practice because of its reliance on transportation planning models, which are based on steady state hourly average and thus incapable of capturing the effects of traffic variations in the transportation system. This paper proposes an intermediate model that better estimates the link speed by considering a set of Emission Specific Characteristics (ESC) variables of the link. The improved link speed data will then be used to estimate emissions. The intermediate model is developed using multiple linear regression analysis. It is then calibrated, validated, and evaluated using a microscopic simulation method. The evaluation results show that the proposed emission estimation method performs better than the current practice and is capable of estimating time-dependent emissions if traffic sensor data are available as model input.

Suggested Citation
Michael G. McNally, R. Jayakrishnan, Lianyu Chu and Nesamani Subramanian Kalandiyur (2006) “Estimation of vehicular emissions by capturing traffic variations”, in Proceedings of the 85th annual meeting of the transportation research board, p. 24p.

Preprint Journal Article

EcoFusion: Energy-Aware Adaptive Sensor Fusion for Efficient Autonomous Vehicle Perception

Publication Date

February 1, 2022

Author(s)

Arnav Vaibhav Malawade, Trier Mortlock, Mohammad Al Faruque

Abstract

Autonomous vehicles use multiple sensors, large deep-learning models, and powerful hardware platforms to perceive the environment and navigate safely. In many contexts, some sensing modalities negatively impact perception while increasing energy consumption. We propose EcoFusion: an energy-aware sensor fusion approach that uses context to adapt the fusion method and reduce energy consumption without affecting perception performance. EcoFusion performs up to 9.5% better at object detection than existing fusion methods with approximately 60% less energy and 58% lower latency on the industry-standard Nvidia Drive PX2 hardware platform. We also propose several context-identification strategies, implement a joint optimization between energy and performance, and present scenario-specific results.

Suggested Citation
Arnav Vaibhav Malawade, Trier Mortlock and Mohammad Abdullah Al Faruque (2022) “EcoFusion: Energy-Aware Adaptive Sensor Fusion for Efficient Autonomous Vehicle Perception”. Available at: 10.48550/arXiv.2202.11330.

conference paper

Geographic load balancing routing in hybrid vehicular ad hoc networks

2011 14th international IEEE conference on intelligent transportation systems (ITSC)

Publication Date

October 1, 2011

Author(s)

Di Wu, Juan Luo, Renfa Li, Amelia Regan
Suggested Citation
Di Wu, Juan Luo, Renfa Li and Amelia Regan (2011) “Geographic load balancing routing in hybrid vehicular ad hoc networks”, in 2011 14th international IEEE conference on intelligent transportation systems (ITSC). IEEE, pp. 2057–2062. Available at: 10.1109/itsc.2011.6083019.

published journal article

Network sensor health problem

Transportation Research Part C: Emerging Technologies

Publication Date

July 1, 2016

Author(s)

Suggested Citation
Zhe Sun, Wen-Long Jin and ManWo Ng (2016) “Network sensor health problem”, Transportation Research Part C: Emerging Technologies, 68, pp. 300–310. Available at: 10.1016/j.trc.2016.04.015.

published journal article

Functional model-based design methodology for automotive cyber-physical systems

IEEE Systems Journal

Publication Date

December 1, 2017

Author(s)

Jiang Wan, Arquimedes Canedo, Mohammad Al Faruque
Suggested Citation
Jiang Wan, Arquimedes Canedo and Mohammad Abdullah Al Faruque (2017) “Functional model-based design methodology for automotive cyber-physical systems”, IEEE Systems Journal, 11(4), pp. 2028–2039. Available at: 10.1109/jsyst.2014.2387487.

conference paper

Modelling freight demand and shipper behaviour: State of the art, future directions

Travel behaviour research: The leading edge

Publication Date

January 1, 2001

Author(s)

Amelia Regan, RA Garrido
Suggested Citation
AC Regan and RA Garrido (2001) “Modelling freight demand and shipper behaviour: State of the art, future directions”, in . Hensher, D (ed.) Travel behaviour research: The leading edge. PERGAMON-ELSEVIER SCIENCE LTD / Int Assoc Travel Behav & Res, pp. 185–215. Available at: 10.1016/B978-008043924-2/50006-7.

Preprint Journal Article

ControlLoc: Physical-World Hijacking Attack on Visual Perception in Autonomous Driving

Publication Date

June 9, 2024

Author(s)

Chen Ma, Ningfei Wang, Zhengyu Zhao, Qian Wang, Qi Alfred Chen, Chao Shen

Abstract

Recent research in adversarial machine learning has focused on visual perception in Autonomous Driving (AD) and has shown that printed adversarial patches can attack object detectors. However, it is important to note that AD visual perception encompasses more than just object detection; it also includes Multiple Object Tracking (MOT). MOT enhances the robustness by compensating for object detection errors and requiring consistent object detection results across multiple frames before influencing tracking results and driving decisions. Thus, MOT makes attacks on object detection alone less effective. To attack such robust AD visual perception, a digital hijacking attack has been proposed to cause dangerous driving scenarios. However, this attack has limited effectiveness. In this paper, we introduce a novel physical-world adversarial patch attack, ControlLoc, designed to exploit hijacking vulnerabilities in entire AD visual perception. ControlLoc utilizes a two-stage process: initially identifying the optimal location for the adversarial patch, and subsequently generating the patch that can modify the perceived location and shape of objects with the optimal location. Extensive evaluations demonstrate the superior performance of ControlLoc, achieving an impressive average attack success rate of around 98.1% across various AD visual perceptions and datasets, which is four times greater effectiveness than the existing hijacking attack. The effectiveness of ControlLoc is further validated in physical-world conditions, including real vehicle tests under different conditions such as outdoor light conditions with an average attack success rate of 77.5%. AD system-level impact assessments are also included, such as vehicle collision, using industry-grade AD systems and production-grade AD simulators with an average vehicle collision rate and unnecessary emergency stop rate of 81.3%.

Suggested Citation
Chen Ma, Ningfei Wang, Zhengyu Zhao, Qian Wang, Qi Alfred Chen and Chao Shen (2024) “ControlLoc: Physical-World Hijacking Attack on Visual Perception in Autonomous Driving”. arXiv. Available at: 10.48550/arXiv.2406.05810.

published journal article

High coverage point-to-point transit: Hybrid evolutionary approach to local vehicle routing

Ksce Journal of Civil Engineering

Publication Date

December 1, 2014

Author(s)

Suggested Citation
Jaeyoung Jung, R. Jayakrishnan and Doohee Nam (2014) “High coverage point-to-point transit: Hybrid evolutionary approach to local vehicle routing”, Ksce Journal of Civil Engineering, 19(6), pp. 1882–1891. Available at: 10.1007/s12205-014-0069-2.