# CS-22: Bus-stop arrival uncertainty

Category: Travel & mobility
Level: Intermediate
Suggested duration: 3–4 weeks

Original UXCharan practice scenario. Validate assumptions; do not present it as a commissioned client project.

## Problem
A hypothetical transit app displays precise arrival times even when location updates are old. Investigate a stop view that communicates uncertainty and helps someone decide whether to wait or consider another route.

## People to learn from
People waiting at an unfamiliar bus stop

## Core scope
- Locate a stop
- inspect arrival information
- compare an alternative

## Research questions
- How do people interpret stale arrival data?
- What supports a wait-or-leave decision?

## Edge cases
- GPS unavailable
- cancelled service

## Specific artefact
A freshness indicator and uncertainty microcopy

## Evaluation question
Can participants distinguish live estimates from scheduled information?

## Work to share
Problem and role; anonymised evidence; alternatives and rationale; task flow; prototype; accessibility considerations; testing findings; revisions and honest limitations.

## Request feedback
Share a viewable Figma, document or portfolio link with Saicharan on WhatsApp: https://wa.me/917093809350
Include CS-22, your name, project stage and your main feedback question. Confirm review scope, timing and any fee directly.

## Methods
- Research planning: https://www.gov.uk/service-manual/user-research/plan-user-research-for-your-service
- Research consent: https://www.gov.uk/service-manual/user-research/getting-users-consent-for-research
- Design exploration: https://www.designcouncil.org.uk/resources/the-double-diamond/
- Usability testing: https://www.nngroup.com/articles/usability-testing-101/
- Accessible forms: https://www.w3.org/WAI/tutorials/forms/
- Portfolio storytelling: https://www.nngroup.com/articles/ux-design-portfolios/