Hao-Min Chen
UX/UI Designer

Park It!

Say goodbye to parking nightmares


Park It! is an app concept that is designed to solve the street parking problems that are happening in the Philadelphia area.

Finding a street parking space can be hard in a big city like Philadelphia, especially during rush hours. This project aims to provide a solution for finding street parking spaces easier and faster. This is a case study for Drexel University.

My Role
I acted as a UX designer, working closely together with three other UX designers on this project.

Tools: Miro, Sketch, Mockplus, Google Docs, Google Forms,

What I did

Conducted qualitative researches
I utilized qualitative research methods such as observation and user interviews to gain a deeper insight to understand their driving habits, parking habits, and their pain points regarding street parking.

I conceptualized the solution and built the prototype to tell the story.


The Problem

It is no secret that Philadelphia's parking has been a considerable pain for regular commuters. Unfortunately, due to the city's old infrastructure and the huge population density, commuters' only option is street parking unless their workplace has a dedicated parking space, or they will have to pay high prices for parking lots. But street parking comes with its share of problems.

Pain points we discovered:

  • In an urban environment such as Center City Philadelphia, the supply of street parking spaces does not meet the demand.

  • Bad urban planning. As Philadelphia strives to be pedestrian-friendly in accommodations and design, inefficient and frenzied parking practices can negatively impact a busy environment.

In summary, the problem is the lack of an efficient processing system to help a driver find a street parking space.

Park It!

A snapshot of the semi-structured interview notes.

User Research

To better grasp our target audience and their needs, we developed a set of questions and have used them as guidelines to conduct a series of interviews to understand the users' struggles on their experiences in finding street parking. Additionally, we also did some field studies to observe users on how they typically find street parking during their commutes.

🤔 My Thinking: We initially classified the user base into commuters and residents. We later decided to focus on the commuters as our target audience since we found out commuters are more likely to look for street parking than residents.

Key Insights

We managed to recruit a total of 10 people for the user interviews and observations, and through our research, we found out:

  • 6 out of 10 interviewees drive every day.

  • They are likely to be looking for parking spaces anywhere between 1 and 6 times per day whenever they are looking for street parking.

  • The willingness to search for parking ranged from five minutes to as long as it takes.

  • The interviewees were willing to pay for parking with the price range varies.

  • Common pain points include aggravation of circling for parking, bad parking practices, and parking too far from one's destination.

Identify the Success Criteria

After we gather our interview and observation data, we identified the following success criteria for our design concept:

  • Locating a parking space should be easy and done in a timely manner

  • The parking space available is at the price the driver is willing to pay

  • Traffic congestion and idling of cars is reduced

  • Improved safety for both drivers and pedestrians

  • The number of parking spaces on a given street is utilized to maximum potential, where one vehicle occupies one space


Explore Potential Solutions

Once our success criteria were defined, the team engaged in an ideation session to quickly produce some ideas. In the end, we came up with a total of 25 potential designs. After reviewing all 25 ideas, we realized that our ideas could be classified into the following categories:

  • LED/street sensors

  • smartphone app

  • vehicle manufacturer navigation system

  • non-technical solutions

We then further classified these ideas under three categories to narrow down our solutions:

  • practical

  • rational

  • unexpected

The team deemed practical as easy to implement, rational as requiring a smartphone app, and unexpected as avant-grade, at least from a parking perspective.

Park It!

To decide on a final solution to work on, we discussed and chose a favorite idea from the three categories (practical, rational, unexpected), which narrows down to the final three ideas.

In the end, we landed on the idea of creating a mobile app for car navigation parking with audio features that aim to help drivers to find parking spaces more efficiently.

🤔 My Thinking: The rationale behind choosing to make a mobile app is that we can implement both audio and visual components, which won't distract drivers from the road as much compared to our other potential designs.

Design & Deliver

User Flow

Once we decided to create a mobile app, we began drafting the user flow to help users achieve their main goal: finding the ideal street parking space.

To help the users achieve this goal, the team identified some information that users will need to know:

  • User needs a place to enter their final destination

  • User needs to know how to navigate from their current location to the parking space

  • User needs to know the availability of the parking spaces

Park It!

Lo-fi Wireframe

With the user flow figured out, the team began designing the lo-fi wireframes to start to get a general idea of how the app would look like. Apart from aiming to satisfy the success criteria, we also designed with safety in mind as we think it is just as if not more important than helping our users find a parking space. I was responsible for the maps navigation feature of the app while my teammates worked on other features such as the initial startup screens and the parking spot searching function.

The following are some screens we worked on using Mockplus.

User Testing

As we completed our lo-fi wireframes, we decided to do some user testing to gain some initial feedback. We consulted the original 10 interviewees plus some additional recruits to test our designs.

Here's what we've learned:

  • The UI is intuitive and easy to understand

  • Most of the users can walk through the whole user flow without any issues

  • The user is having trouble identifying which parking he/she selected

  • There was confusion as to if the handicap markers indicated a separate parking space from the standard pins or if it was part of a standard pin but provided the option for handicap parking

  • The user doesn't have a way to find out the price of the parking space

Hi-fi Wireframe

After we gathered the feedback from our user testings, we proceed to make a few improvements and produced a hi-fi wireframe of the app.

During this process, we made a few design adjustments based on feedback from user testings:

  • Delete the legend
    One of the feedback we received is that the legend was taking too much space and was blocking a huge part of the map, this could cause usability issues and might even cause potential danger since the driver doesn't know what's blocked behind the legend window. So we deleted the legend and let the icons do the talking.

  • Getting rid of the volume slider at the bottom
    The volume slider shouldn't always be there as our testers think it is not an important feature that the user needs to interact with all the time; the reason for this is because we want to give as much space to the navigation map as possible.

  • Combining the audio navigation feature (the megaphone icon and navigation text) with the address bar at the bottom
    We realized that the audio navigation text can be combined with the address bar at the bottom to provide a much cleaner look. This will give more space to the navigation map and prevent distractions to the driver.


Throughout this case study, I learned the importance of receiving user feedback, no matter if it is positive or negative. Only by listening to your users' voices can you clearly define the path to improve the product.

Moving forward, I will take the experiences I gained here to further refine my user research skills to gain useful data in a more efficient manner.