Preprint Journal Article

On Robustness of Lane Detection Models to Physical-World Adversarial Attacks in Autonomous Driving

Publication Date

July 6, 2021

Report Number

arXiv:2107.02488

Abstract

After the 2017 TuSimple Lane Detection Challenge, its evaluation based on accuracy and F1 score has become the de facto standard to measure the performance of lane detection methods. In this work, we conduct the first large-scale empirical study to evaluate the robustness of state-of-the-art lane detection methods under physical-world adversarial attacks in autonomous driving. We evaluate 4 major types of lane detection approaches with the conventional evaluation and end-to-end evaluation in autonomous driving scenarios and then discuss the security proprieties of each lane detection model. We demonstrate that the conventional evaluation fails to reflect the robustness in end-to-end autonomous driving scenarios. Our results show that the most robust model on the conventional metrics is the least robust in the end-to-end evaluation. Although the competition dataset and its metrics have played a substantial role in developing performant lane detection methods along with the rapid development of deep neural networks, the conventional evaluation is becoming obsolete and the gap between the metrics and practicality is critical. We hope that our study will help the community make further progress in building a more comprehensive framework to evaluate lane detection models.

Suggested Citation
Takami Sato and Qi Alfred Chen (2021) “On Robustness of Lane Detection Models to Physical-World Adversarial Attacks in Autonomous Driving”. arXiv. Available at: http://arxiv.org/abs/2107.02488 (Accessed: October 11, 2023).

working paper

Regulation by Prices and by Command

Publication Date

June 1, 1995

Associated Project

Working Paper

UCI-ITS-WP-95-11, UCTC 276

Areas of Expertise

Abstract

Standard economic theory states that regulation by price is more efficient than regulation by command and control. Exceptions may arise of regulators have good knowledge of the supply curve. In practice, though, governments usually regulate by command and control, and do so when there is uncertainty about the technology of supply. We show that government may prefer to regulate by command and control when it cares about the investment decisions of a firm.

Suggested Citation
Amihai Glazer and Charles Lave (1995) Regulation by Prices and by Command. Working Paper UCI-ITS-WP-95-11, UCTC 276. Institute of Transportation Studies, Irvine. Available at: https://escholarship.org/uc/item/6bs9v6wk.

Conference Paper: Method for creating a real-time distributed travel history database – Persistent traffic cookies project

Abstract

A novel distributed method for estimating a trip table in real time is described. The system is called “persistent traffic cookies” by analogy with the use of cookies by web servers to keep track of the current state of web browsers navigating a web site. The method uses traffic cookies placed on in-vehicle computers to maintain the state (current trip) of vehicles moving through the system. These cookies are persistent from day to day; taken together, they form a complete travel history for a traveler or vehicle. The method leverages the vehicles to store their own travel data and then physically do carry those data around the network. Advantages include scalability in both storage and computational effort as well as the unique ability to incorporate the travel behavior of individuals into real-time traffic predictions. A small-scale simulation is presented to illustrate the concept and its potential applications.

published journal article

Field Operational Test of Integrated Freeway Ramp Metering/Arterial Adaptive Signal Control: Lessons Learned in Irvine, California

Transportation Research Record: Journal of the Transportation Research Board

Publication Date

January 1, 2002

Author(s)

C. Arthur MacCarley, Steve Mattingly, Michael McNally, Daniel Mezger, James Moore

Abstract

A systematic evaluation of the performance and effectiveness of a field operational test (FOT) of an integrated corridor-level adaptive control system was attempted from fall 1994 through spring 1999 in Irvine, California. The FOT was conducted by a consortium consisting of the California Department of Transportation (Caltrans), the city of Irvine, and two private-sector consultants—National Engineering Technologies Corporation and Farradyne Systems, Inc., a division of Parsons Brinckerhoff—with the city of Irvine as the lead agency. The FOT was a cost-share funded by FHWA as part of the Intelligent Vehicle Highway System Field Operational Test Program. The FOT involves an integrated advanced transportation management system, which extends the capabilities of existing traffic management systems in the city of Irvine and in Caltrans District 12. The evaluation originally entailed both a technical performance assessment and a comprehensive institutional analysis. This report of the Irvine FOT does not constitute a technical evaluation because of the failure of any of the planned technologies to be successfully implemented in the field. Because of the extended time frame associated with the project and the significant range of technical and institutional issues associated with the development and eventual failure of the FOT, a summary of project development, institutional barriers, and lessons learned is provided.

Suggested Citation
C. Arthur MacCarley, Stephen P. Mattingly, Michael G. McNally, Daniel Mezger and James Moore (2002) “Field Operational Test of Integrated Freeway Ramp Metering/Arterial Adaptive Signal Control: Lessons Learned in Irvine, California”, Transportation Research Record: Journal of the Transportation Research Board, 1811(1), pp. 76–83. Available at: 10.3141/1811-09.

conference paper

Effects of Activity-Travel Chaining Propensity on Peak and Off-Peak Travel: Workers Versus Non-Workers

Proceedings, 104th Annual Meeting of the Transportation Research Board

Publication Date

January 1, 2025

Abstract

Activity-travel chaining involves an interconnected series of activities and associated trips that occur between a pair of anchors or primary activities. By this definition, activity-travel chaining includes both the attributes of activities (e.g., location, duration, activity type, etc.) and trips (e.g., schedule, distance, route, mode, etc.). Prior research suggests that activity-travel chaining propensity can greatly influence travel demand and its temporal distribution. With the motivation to support reliable travel forecasting and inform travel demand management strategies, we investigate the direct and indirect effects of activity-travel chaining propensity for three activity types on peak and off-peak motorized person miles traveled (PMT). To perform the investigation, we employ a structural equation modeling (SEM) framework with five mediator variables (i.e., travel time savings ratio, activity space area, average daily trips, non-motorized travel mode share, and transit share) to capture the indirect effects of trip chain propensity (as well as socio-demographic and land use) on motorized PMT. We also compare workers and non-workers by specifying and estimating separate models for each group. The results indicate that activity-travel chaining propensities increase peak-hour motorized PMT for workers and non-workers. Also, non-workers chain maintenance activities during off-peak hours to avoid conducting or traveling to these activities during peak hours. We also find significant effects of location characteristics and mediator variables on peak-hour motorized PMT that policymakers can leverage when formulating travel demand management strategies.

Suggested Citation
Tanjeeb Ahmed and Michael F. Hyland (2025) “Effects of Activity-Travel Chaining Propensity on Peak and Off-Peak Travel: Workers Versus Non-Workers”, in Proceedings, 104th Annual Meeting of the Transportation Research Board. Washington, D.C..

published journal article

Evaluation of a statewide highway data collection program.

Transportation Research Record

Publication Date

January 1, 1986

Author(s)

Stephen Ritchie, Mark E. Hallenbeck

Abstract

This paper ls a discussion of an in-depth evaluation study of highway data development and analysis activities of the Washington State Department of Transportation. Statistically based procedures and recommendations that were developed to streamline the highway data collection program are described. Opportunities to reduce manpower and equipment costs, streamline work activities, Improve the quality of data collected, and provide accurate and timely data for the various users were Identified. Given the focus on highway data, a major effort was devoted to the department’s traffic-counting program. However, many data items and programs were considered, and the following items received particular attention: traffic volume counting, including estimation of annual average dally traffic at any location tbroughout the state highway system; associated seasonal, axle, and growth factors; vehicle classification; trqck weight; and the relationships between the statistical sampling requirements recommended for these items and those associated with the FHWA Highway Performance Monitoring System (HPMS) in the state. Employing statistical sampling methods that complement the HPMS sample offers a strong potential for significantly Improving the cost-effectiveness of a statewide highway data collection program.

Suggested Citation
Stephen G. Ritchie and Mark E. Hallenbeck (1986) “Evaluation of a statewide highway data collection program.”, Transportation Research Record, pp. 27–35. Available at: https://onlinepubs.trb.org/Onlinepubs/trr/1986/1090/1090-005.pdf.

working paper

The Built Environment as a Determinant of Walking Behavior: Analyzing Non-Work Pedestrian Travel in Portland, Oregon

Publication Date

July 1, 2001

Working Paper

UCI-ITS-WP-01-9, UCI-ITS-AS-WP-01-4

Areas of Expertise

Abstract

Much has been written about the connection between land use/urban form and transportation from the perspective of impacting automobile trip generation. This only addresses half the issue. The theoretical advances in land use/transportation relationships embodied in paradigms such as the jobs housing balance, neo-traditional design (NTD) standards and transit oriented development (TOD) rely very heavily on the generation of pedestrian traffic in order to realize their proposed benefits. The analysis presented here employs similar models and data sets used in Boarnet & Greenwald for the Portland, Oregon area, but applies them towards analysis of non-work walking travel. The results suggest that whatever effects land use has on affecting individual non-work walking trip generation, the impacts take place at the neighborhood level.

Suggested Citation
Michael J. Greenwald and Marlon G. Boarnet (2001) The Built Environment as a Determinant of Walking Behavior: Analyzing Non-Work Pedestrian Travel in Portland, Oregon. Working Paper UCI-ITS-WP-01-9, UCI-ITS-AS-WP-01-4. Institute of Transportation Studies, Irvine. Available at: https://escholarship.org/uc/item/9gn7265f.

published journal article

NONPROFIT LED NEOLIBERAL GROWTH MACHINES AND THE PRIVATIZATION OF COMMUNITY ENGAGEMENT: the obama presidential center on chicago’s south side

International Journal of Urban and Regional Research

Publication Date

November 1, 2025

Author(s)

Virginia Parks, William Sites, Tadeo Weiner Davis

Abstract

Abstract We analyze the development of the Obama Presidential Center in Chicago as the product of a new kind of urban growth machine—a nonprofit‐led neoliberal growth machine. Building on studies of nonprofit‐led urban development as well as research on CBA‐driven opposition, we reconstruct how an Obama Foundation‐led growth machine was able to dominate pre‐development planning, privatize public parkland and mount its own private community engagement process in ways that stymied powerful community opposition. We contend that the political resources of nonprofit foundations, especially their ability to claim a mantle of public authority and legitimacy, equip them to bypass genuinely public institutional processes and to repel even strong resistance from community actors. We argue that the array of soft political resources marshaled by the Obama Foundation—its perceived neutrality, collaborative reputation and public/private ambiguity—lend valuable assets to the task of bending participatory processes toward the political legitimation of controversial development projects. Because nonprofits are uniquely situated to deploy these political resources, the case of the OPC portends an expanding repertoire of action for growth machine actors, including the privatization of community engagement.

Suggested Citation
Virginia Parks, William Sites and Tadeo Weiner Davis (2025) “NONPROFIT LED NEOLIBERAL GROWTH MACHINES AND THE PRIVATIZATION OF COMMUNITY ENGAGEMENT: the obama presidential center on chicago’s south side”, International Journal of Urban and Regional Research, 49(6), pp. 1417–1436. Available at: 10.1111/1468-2427.13350.

published journal article

How concentrated disadvantage moderates the built environment and crime relationship on street segments in Los Angeles

Criminology & Criminal Justice

Publication Date

November 14, 2022

Author(s)

John R Hipp, Sugie Lee, Dong Hwan Ki, Jae Hong Kim

Abstract

Criminological theories have posited that the built environment impacts where crime occurs; however, measuring the built environment is difficult. Furthermore, it is uncertain whether the built environment differentially impacts crime in high-disadvantage neighborhoods. This study extracts features of the built environment from Google Street View images with a machine learning semantic segmentation strategy to create measures of fences, walls, buildings, and greenspace for over 66,000 street segments in Los Angeles. Results indicate that the presence of more buildings on a segment was associated with higher crime rates and had a particularly strong positive relationship with robbery and motor vehicle theft in low-disadvantage neighborhoods. Notably, fences and walls exhibited different relationships with crime. Walls, which do not allow visibility, were strongly negatively related to crime, particularly for robbery and burglary in high-disadvantage neighborhoods. Fences, which allow visibility, were associated with fewer robberies and larcenies, but more burglaries and aggravated assaults. Fences only exhibited a negative relationship with violent crime when they were located in low-disadvantage neighborhoods. The results highlight the importance of accounting for the built environment and the surrounding level of disadvantage when exploring the micro-location of crime.

Suggested Citation
John R Hipp, Sugie Lee, Dong Hwan Ki and Jae Hong Kim (2022) “How concentrated disadvantage moderates the built environment and crime relationship on street segments in Los Angeles”, Criminology & Criminal Justice, p. 17488958221132764. Available at: 10.1177/17488958221132764.

conference paper

Metrics for Quantifying Shareability in Transportation Networks: The Maximum Network Flow Overlap Problem

102nd Transportation Research Board Annual Meeting 2023

Publication Date

January 1, 2023
Suggested Citation
Navjyoth Sarma and Michael Hyland (2023) “Metrics for Quantifying Shareability in Transportation Networks: The Maximum Network Flow Overlap Problem”. 102nd Transportation Research Board Annual Meeting 2023.