Product design question
Design a parking garage app.
- Uber
- Product design
- Easy
Practice this question out loud. An AI interviewer asks it, follows up like a real interviewer would, and scores your answer. Type or speak.
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What this question tests
Product design fundamentals: scoping a straightforward utility app around core user flows and edge cases.
How to approach it
- Define the target user: drivers looking for parking in a city, and pick one context like a downtown garage chain.
- List core needs: finding available spots, reserving ahead, and paying without friction.
- Design the core flow: search by location, view real-time availability and price, reserve, and pay on exit.
- Consider edge cases, like a reserved spot being occupied or a driver overstaying their time.
- Define success as completed reservations per week or reduced circling time to find a spot.
What a strong answer includes
- Anchors the design in real-time availability data, the core value proposition over a paper ticket system.
- Addresses a concrete edge case: what happens if the reserved spot is taken, with a guaranteed alternate spot policy.
- Proposes dynamic pricing as a monetization and demand-management lever, marked as an assumption.
- Uses an assumed metric, e.g. cutting average search-to-park time from 8 minutes to 3.
Common mistakes
- Designing only the happy path and ignoring overstay or occupied-spot edge cases.
- Not addressing how the app gets real-time data from garages.
- Treating this as trivial and skipping a monetization or success metric discussion.
Likely follow-up questions
- How would you get garage owners to share real-time availability data?
- How would you handle a driver who overstays their reserved time?
- What would you prioritize for a first release?
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Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 4: Discovery and strategy for AI products
- Chapter 7: AI UX and human oversight: design for a system that is wrong sometimes
- Chapter 14: Get the job: the AI PM interview loop