*Luminance levels based off of the International Engineering Society of America’s 2018 guidelines, Recommended Practice for Lighting Roadway and Parking Facilities

StreetShine

September - December 2024
Mobile app design for a hyperlocal city streetlight mapper for Downtown Providence residents to feel safer when walking to unfamiliar destinations at night, developed through user research and testing with residents of the city. Part of a suite of app designs for Downtown Providence called RISD DTPVD.
Project Outcomes:
Mobile App Design
User Testing
Design System
StreetShine - Mobile Streetlight Mapper
StreetShine is a novel navigational tool providing a user-friendly map of the current streetlight visibility in the Downtown Providence district of Rhode Island. It uses provided luminance data from the associated IES* file of each light post, and coordinates with existing Providence streetlight maintenance systems such as PVD 311 and PRISM** to maintain an up to date record of currently operational lamps.
*IES file = Illumination Engineering Society file that contains light data for manufactured light fixtures.

**PVD 311 = the Mayor’s center for City Services mobile app for requesting services such as light repairs. Partnership for Rhode Island Streetlight Management (PRISM) = a streetlight maintenance non-profit organization that maintains certain cobra streetlights in Providence by contract with the city
RISD DTPVD App Suite
StreetShine is part of RISD DTPVD, a diverse suite of app designs created by the UIUX Design Fall 2024 Studio intended to meet Downtown Providence residents' needs through software. Students collaborated on a shared design system called Pyramid to be used in all DTPVD software, and each focused solving a specific problem for Downtown residents identified through their own research.
Map - Basic
When zoomed out, the app maps heatmap of average luminance* from .3 cd/m2 to 1.2 cd/m2**.
Report Outage via Map
The user can initiate a report by clicking light post icon which appears when zoomed in.
Route generation
Routes can be calculated given departure time and a minimum average luminance. Luminance level slider color correlates with heatmap color as a repeated signifier for brightness
Problem
According to user research, including 6 intitial interviews with current Downtown Providence residents and public officials, along with a survey of supplementary news articles, many pedestrians feel unsafe walking at night which prevents them from fully exploring the city comfortably and leads to self-fulfilling negative perception of the area's safety. 
Goal
Help Downtown Providence pedestrians feel safer while traveling to unfamiliar destinations at night.
While software might not be able to directly influence the reality of safety in the area, it can help people’s real experiences. By equipping residents with a real-time, relevant resource, they can be more confident and empowered in their journey.
Success Metrics
What my Figma prototype achieved:
83%
Out of 6 testers said they would use the app to feel safer walking Downtown at night
67%
Out of 6 testers we able to report light outages to the database without guidance
Future Success Metrics
If the app was shipped, the goal would be to attain:
50%
Increase in community reporting of light post work order requests per day to the PVD 311 database
10%
Increase in small business, restaurant, and entertainment nightly sales Downtown (as a result of increased foot traffic)
"The most important thing is to please use the new (PVD 311) system, and then we’re all better off.”
Mayor Brett Smiley, WPRI Providence
Initial Discovery Interviews: Is Providence Unsafe?
I started by interviewing 6 stakeholders to the of Downtown Providence, including a selection of direct users (residents), partners (public officials, organization members), and clients (city planners and institutional leaders) to discover problems in Downtown Providence that could be addressed through software. I also conducted observational research of the city entailing ethnographic surveying and 4 on-the-spot interviews.
Daniel Cavicci
RISD Professor & Former Interim Provost
Tim Shea
RISD Professor & Former Interim Provost
Joe Mulligan
Providence Director of Planning & Management
Dylan Giles
Providence Streets Coalition Member
Eli Kaufman
Providence Bike Collective Member
Reggie Packer
RISD Public Safety Seargent
Observational Research of Downtown Providence
I then created an affinity map of this data organized into groups of the general city identity, specific daily experiences, and hopes and fears for the future.
The topic of perception vs. reality of safety became a consistent throughline within my initial research. I found that the reality of safety may be different than perception - some residents and visitors may perceive an unfriendly environment react negatively, while others develop behaviors to adapt and navigate the environment.
"Perception issues of safety prevent people from exploring"
Joe Mulligan, Providence Director of Planning & Development
"Perception (of safety) becomes reality ... your mindset and behavior adapt to the environment"
Reggie Packer, RISD Public Safety Sergeant
This discrepancy between public perception and reality of safety is supported by news articles about the city - in this 2021 article, 26 out of 30 people in Providence said they felt safe. I wanted to understand the perspective of the 4 people who felt unsafe and see if I could help.
2016 WPRI Article - Providence Safety Perceptions
This perception of unsafety may reflect reality. According to the Providence Police Department's November 03, 2024 Crime Statistics, the most common crime in the Downtown (District 1) in the past year are larcenies, and have seen a 5% increase since January 2023. Additionally, since last year, the biggest increase in crime Downtown has been a 78% increase in robbery without a firearm, along with 1 aggravated assault with a firearm.
Providence Police Department November 2024 Crime Report
Informed by my research on the topic, I thought I could add an important perspective to the conversation that accurately addressed residents’ complex feelings toward safety Downtown.

How might we make a safer downtown?
Initial User Persona: Sally
I created an initial user persona, Sally, who was a Downtown resident who is unable to explore more parts of the city because she does not feel comfortable going out spontaneously by herself.
“As a single woman, I need to feel safer on my own, so that I can experience what it is like to freely explore the city.”
Prototype 1: Community Safety Advice Forum
My initial idea was a community-based public information platform for those with the “time and knowledge” of the city that Packer had referred to, to share their wisdom, helping residents who feel unsafe
Initial Sketches
My user flow for this idea was straightforward: within the forum, residents can ask or search for questions related to public safety, and reply to each other with answers.
Wireframes
Figma Prototype - Main Screens
User Testing Round 1
To test this prototype I interviewed 5 people who were either Downtown residents or public safety officials, which were my target user groups for the app. 
Downtown Resident (Anonymous)
Higher Education Worker, from New York CIty
Rodney Chatman
Brown University Vice President for Public Safety and Emergency Management
Christopher Dupont
Captain of Operations, Brown University Department of Public Safety
Michael Jennette
Lieutenant, Providence Police Department Downtown District Commander
Sanni
RISD Dining Staff
Overall, the feedback for this app was negative, as 0 out of the 5 users said they would use this app to help them feel safer. Was I designing for a user that did not exist?
I made an affinity map of the feedback from these interviews to determine takeaways and next steps from the data.
The most significant takeaways were as follows:
Takeaway 1: Users demonstrated a safety perception disconnect between public safety officials and pedestrians, supporting my identification of this problem area from my initial research.

Next Step: Identify the reason users perceive Downtown to be unsafe, and ensure that the app addresses their challenges
Takeaway 2: Users desired for more real-time information features, and did not find the general advice format useful for their safety needs

Next Step: Redefine the approach to the app to be more relevant to residents’ needs
Prototype 2: Light Mapper
Taking away the feedback that users did not necessarily want generalized advice but rather real time updates on the city, I ideated again on who my target user was and what my app could provide.
One piece of advice came from Professor Ramon Tejada, who advised me to ““focus on one specific use case” and to define a tangible indicator of “‘feeling safer’”.
Ramon Tejada, Graphic Designer & Professor
From this advice, I went back to my initial research and found that users stated that streetlighting at night played a significant effect on residents’ perception of safety.
Joe Mulligan, Providence Director of Planning & Development
Reggie Packer, Providence Director of Planning & Development
I also conducted another round of observational research in which I walked through Downtown at night, recording the visibility on the sidewalks of streets and alleys.
Map with Annotations (green = cobra light, yellow = historical lamp, red = low visibility)
Kennedy Plaza
Westminster St. and Memorial Boulevard
Edited User Persona: Emily
To focus more on the use case of night-time visibility, I changed my initial Sally persona to Claire, who specifically has concerns about street lighting at night.
“As a worker and resident Downtown, I need to find paths that have good lighting at night, so I can enjoy the vibrant night life of this city more.”
Incorporating the singular use case of street visibility, my second prototype now specifically focused on providing a real-time lighting information resource.
Initial Sketches
Figma Prototype - Main Screens
The Figma prototype included a map with light pins corresponding to each lamp post in the city, functionality to report lamp outages in coordination with existing city maintenance systems (PVD 311 and PRISM*), create directions with respect to a minimum visibility (luminance) parameter, and a simplified “heatmap” map layer.

The luminance parameters were based off the International Engineering Society of America’s 2018 guidelines, Recommended Practice for Lighting Roadway and Parking Facilities, which states light value ranges for urban pedestrian zones (see the Light Mapping & Technical Feasibility section for more details) .
 User Testing Round 2
To test this new prototype, I interviewed 6 new people who were either Downtown residents or public safety officials, which were my target user groups for the app. Many of these participants were introduced to me by the 5 participants from the previous round.
Quiana Young
Director of Advocacy, Engagement, and Communications at Brown Public Safety
Sharon Steele
President, Jewelry District Association, Long-time Resident
Tina Shepard
Community Engagement Specialist, Providence Police Department
Jan-Dell Antoniou
Patrolwoman, Providence Police Department
Kristen McGinn
President, Providence Downtown Neighborhood Association
Jackie
RISD Freshman
Compared to the last prototype, the feedback for this iteration was encouraging, as now 5/6 users said they would use this app to help them feel safer.
From my testing with one particular resident who belonged to an older age demographic and lived in the city for many years, I discovered this app would not just be useful to inexperienced wayfinders, but also people who did have experience in the city but who were taking new, unfamiliar routes.

It also meant that I should push the “simplicity” of the UI to continue to make it accessible to older, non-tech users.
Sharon Steele, President,
Jewelry District Association, Long-time Resident
From this testing, I confirmed that there was a genuine use case of someone walking to an unfamiliar destination at night, and wanting a tool to help decide the route they should take.

Now that I had spoken to legitimate target users for this app, I refined my personas to more accurately reflect their backgrounds and desires, including Olga, an older resident who wants to travel to new destinations, and Francesca, a college student, who is in the city for the first time in her life.
Just like the last iteration, I made an affinity map of the feedback from these interviews to determine takeaways and next steps from this round of data.
Takeaway 1: 5/6 users preferred the dark mode option that I included.

Next Step: Focus on dark mode as the default option and refine colors for accessibility, aesthetic, and harmony
Takeaway 2: Users were not completely confident about the symbolism of the “Light pins” and their functionality.

Next Step: Redesign the light pins to be more clear and explicit about what they are. Add labeling where possible
Takeaway 3: Users found it unclear how to report streetlight outage

Next Step: Add more explicit information about light identification and data endpoints, as well as confirmation when the update is inputted
Takeaway 4: Users preferred the simplified view but also desired to still have the option for the clickable light pins

Next Step: Use the averaged view as default and refine the configuration to be as informative as possible.
Custom Components
The app was built on the Pyramid Design system, a custom set of fonts, colors, and components created for the DTPVD suite of apps to create a unified design language within all DTPVD software.

In addition, I designed a custom time picker component which was required to allow the user to select departure time and luminance levels
Initial Time Picker Component
Time Picker Component in V2 Prototype
For my higher-fidelity 3rd iteration, I revised this component to allow more precision in the time selection. 
Revised Time Picker Component
Revised Component in V3 Prototype
I then customized this component for setting the visibility (luminance) level in candelas/m2, in which the color transitions from blue (lowest luminance) to yellow (highest luminance).
The color spectrum and luminance range for the visibility setting picker was aligned with the color palette of my revised light heatmap, which maps average luminance from a spectrum of .3 cd/m2 to 1.2 cd/m2.
Prototype 3 Basic Heatmap Screen
I thought it was important to include a diverging color palette (blue to yellow) to show that the light is visible even if it is at the low end of the luminance spectrum.
Attlasian - Guide to Heatmaps
StreetShine Heatmap Color Palette
Branding
These blue and yellow colors, when overlaid on a black background, reminded me of the color scheme for the Jewelry District, a neighborhood within Downtown Providence. This was the inspiration for the name StreetShine, which can mean the light on the roads, and also reference the “sparkling” jewelry manufacturing history of Downtown Providence.
StreetShine Logo
Inspiration: The Jewelry District Association Logo
Light Mapping & Technical Feasibility
StreetShine Light Mapping System
Lighting levels are typically measured in luminance (the amount of light emitted toward a specific direction) or illuminance (the amount of light the cast object receives. This app uses the unit of luminance, in candelas per square meter (cd/m2).
Graphic: Luminance vs. Illuminance. vs. Luminous Flux
The minimum and maximum luminance values for the navigation calculation and the heatmap coloring are derived from the International Engineering Society of America’s 2018 guidelines, Recommended Practice for Lighting Roadway and Parking Facilities.  According to the guidelines, the lowest pedestrian activity classification zone is .3 cd/m2, and the highest pedestrian activity classification zone is 1.2 cd/m2.
ESA RPLRP 2018 Lighting Classification Zones
To inform myself about the feasibility of my idea for the app’s light mapping system, I spoke with Brian Woodbury, Executive Director of PRISM.
Brian Woodbury, Executive Director, PRISM
He told me about a San Diego consultancy founded in 2009 called Evari GIS Consulting, which works on “incorporating IES files into GIS (Geographic Information Software) to support clients working on outdoor lighting projects”. Their software creates “digital twin” of the light footprint of light fixtures.
EvariLux Demo
This information showed me that my mapping idea was actually possible, and that my safety use case was actually a novel area of exploration for the technology. Woodbury stated that the program is for industry-scale projects, takes “days to calculate” with a “supercomputer”, because it calculates many other datapoints in the map (including “crime, pedestrian/vehicle interactions, cross-walks, bus-stops”).

There is space for a more “low-level”, user-facing mobile app to create a simpler, “lighter-weight” version of this software for pedestrians to use.
Delivery: 3rd Higher Fidelity Prototype
The 3rd iteration of the app prototype can be found using the link below:
User Journey Map
Map - Basic
When zoomed out, the app maps heatmap of average luminance from .3 cd/m2 to 1.2 cd/m2.
Map - Sequential Heatmap Option
If desired, the user can set the color palette to a sequential heatmap style.
Report Outage via Map
The user can initiate a report by clicking light post icon which appears when zoomed in.
Report Outage via Signage
The user can also initiate a report by entering ID number or scanning QR code on signage on the lamps, which is already an existing system with PVD 311
Proposed StreetShine Signage on Light Post
Existing PVD 311 Signage on Light Post
Data integration
Report data feeds into the PVD 311 database, which is collected by both PRISM and the Mayor’s Center for City Services
Route generation
Routes can be calculated given departure time and a minimum average luminance. Luminance level slider color correlates with heatmap color as a repeated signifier for brightness
Conclusion & Next Steps
From this project, I learned that designing for the public, and specifically, designing for the topic of safety, is difficult because it is so multilayered and subjective. I think that the logo, and visuals are still areas for improvement in this project.
I’m also interested in pursing a website to publicly post the DTPVD suite of app designs from this semester.

I believe it’s important for our designs to exist in the world in some way, and to be actually be seen by the City.
Since the EvariLux GIS software already exists, I believe that the city to consider an app like this. Even if it may not turn out to have a large safety perception benefit, I believe it is worth trying, and I have data to back it up.