Join the Project Sidewalk team!

Our research group (Makeability Lab in the HCIL) is investigating new methods and tools for urban accessibility data collection and analysis. For Summer 2017, we are looking for talented, creative, and self-motivated undergrad research assistants with strong programming skills, technical background and an interest in urban accessibility to work on novel tools and applications for people with mobility impairments.

Potential Projects

Crowdsourcing Data
UI Design and Enhancement: In Fall 2016, we launched a volunteer based tool for collecting data about accessibility features for Washington D.C. We collected over 66000 labels (and counting) with the help of more than 500 users (more details on We're interested in enhancing this tool with exciting new features such as creating a gamified interface.
Automated Techniques to aid Accessibility Labeling
Automated Techniques to Aid Labeling: Beyond improving the existing design of the tool, we are interested in integrating computer vision techniques to automate the labeling process such that we can expand to multiple cities. This would involve solving hard problems such as detecting sidewalk obstacles, dealing with occlusion and others.
Data Modeling and Analysis
Data Modeling and Analysis: We're interested in analyzing the data collected from our public tool (e.g., creating accessibility models of a city) and to build tools to understand user participation behavior (e.g. study user's engagement with the tool).
Interactive Tools for Data Visualization and Navigation
Interactive Tools for Data Visualization and Navigation: We are working on creating different kinds of tools to visualize and utilize the data collected. For e.g., an at-a-glance visualization of the city's accessibility; navigation tools for people with disabilities, specifically for the mobility impaired community.

Required Skills

We are specifically looking for students who have one or more of the following skills and with a keen interest in expanding abilities in these areas:

You will be working in the HCIL Hackerspace, will attend weekly research group meetings, and will join a team of other talented undergraduate and graduate students. By the end of the summer, we hope that you will create some exciting tools, help us submit a publication to CHI2018 and have an enriching learning experience! :-)

For best consideration, please read this page about undergraduate research and then send your CV and unofficial transcripts to and CC by May 15th. Use the subject line: "Summer 2017 Intern: << Your Name >>". We will contact a subset of qualified candidates to setup interviews and request other materials.

Please feel free to forward this announcement.

About Project Sidewalk

Roughly 30.6 million individuals in the US have physical disabilities that affect their ambulatory activities; nearly half of those individuals report using an assistive aid such as a wheelchair, cane, crutches, or walker. Despite comprehensive civil rights legislation for Americans with disabilities, many city streets, sidewalks, and businesses remain inaccessible. The problem is not just that street-level accessibility affects where and how people travel in cities but also that there are few, if any, mechanisms to determine accessible areas of a city a priori.

Project Sidewalk has a two-pronged vision: (i) To develop scalable data collection methods for acquiring sidewalk accessibility information using a combination of crowdsourcing, computer vision, and online map imagery, and (ii) To use this new data to design, develop, and evaluate a novel set of navigation and map tools for accessibility. Our overarching goal is to transform the ways in which accessibility information is collected and visualized for every sidewalk, street, and building fa├žade in America.

Try out our crowdsourcing tool at and take a look at the code on github.

Publications on Project Sidewalk

The Design of Assistive Location-Based Technologies for People With Ambulatory Disabilities: A Formative Study
Kotaro Hara, Christine Chan, Jon E. Froehlich
CHI 2016

Improving Public Transit Accessibility for Blind Riders by Crowdsourcing Bus Stop Landmark Locations With Google Street View: An Extended Analysis
Kotaro Hara, Shiri Azenkot, Megan Campbell, Cynthia Bennett, Vicki Le, Sean Pannella, Robert Moore, Kelly Minckler, Rochelle Ng, Jon E. Froehlich
ACM Transactions on Accessible Computing (TACCESS) 2015

Tohme: Detecting Curb Ramps in Google Street View Using Crowdsourcing, Computer Vision, and Machine Learning
Kotaro Hara, Jin Sun, Robert Moore, David Jacobs, Jon E. Froehlich
UIST 2014

Combining Crowdsourcing and Google Street View to Identify Street-level Accessibility Problems
Kotaro Hara, Victoria Le, Jon Froehlich
CHI 2013 Proceedings