BARRIER-AWARE WAYFINDING — INSIGHTS → FLOWS → PROTOTYPE (DEMO) → SYSTEM → HANDOFF

Step-free routing that adapts to elevators, ramps, and real-world constraints

Designed a trust-first navigation flow that explains accessibility tradeoffs clearly and reroutes fast when conditions change.
Delivered an interactive demo + reusable patterns (filters, confidence signals, edge states) with ship-ready specs for consistent rollout.

Metrics: 8 screens • 10 components • iterations • usability checks


ROLE

Product/UX Designer

EXPERTISE

End-to-end UX • Interaction Design • Systems Thinking

YEAR

2025

Project description

Project description

AccessMap is an accessibility-first navigation system that helps people choose routes that match real mobility constraints—not just the shortest path. I translated barrier signals (step-free options, slope/grade, curb cuts, surface quality, and temporary blockers like elevator outages/construction) into a trust-first routing experience with clear tradeoffs and confidence cues—so users can move with control even when data is imperfect.

Built to ship and scale, the work focuses on decision moments: filter → compare tradeoffs → start route → detect issues → reroute/recover. I delivered an interactive demo prototype plus a reusable component + state system (missing data, conflicts, outages, reroutes) with handoff-ready specs—so teams can iterate fast, align stakeholders quickly, and roll out consistent patterns across cities.

Timeline

4–6 weeks — Discovery → requirements + constraint mapping → IA + route logic → flows → hi-fi UI → interactive prototype (demo) → usability loops + iteration → handoff

Why this matters

Most maps assume a “default body.” For wheelchair users, people with injuries, seniors, and caregivers, stairs/steep slopes aren’t a minor inconvenience—they’re a hard stop. AccessMap reframes routing as a trust + safety problem: if constraints aren’t explicit, people can’t plan safely. By making accessibility signals visible and designing resilient fallback states (missing data, blocked paths, sudden outages), AccessMap enables inclusive navigation that can scale across cities while keeping users in control.

Process

Process

I treated this as a high-stakes, trust-first navigation problem—where clarity, reliability, and accessibility aren’t “nice to have,” because the cost of a wrong route is real. End-to-end UX: requirements → decision moments → interactive demo → reusable system → handoff—built to handle missing data, outages, and real-world constraints.

1) Cross-functional + constraints

Partnered with PM + Engineering to translate accessibility constraints + data gaps into user flows, edge states, and handoff-ready specs—aligning early on feasibility so what we demo matches what ships.

2) Templates/flows/diagrams

Used repeatable templates to quickly produce process flows, conceptual diagrams, and IA—helping stakeholders understand the tradeoffs and reducing downstream rework.

3) Fast iteration

Iterated quickly from flows → wireframes → hi-fi mocks → prototypes, incorporating feedback loops and usability signals to refine trust cues, decision clarity, and reroute/recovery behaviors.

Research & Insights

Identified primary users: wheelchair users, cane users, seniors, travelers with luggage, and people with temporary injuries.

  • Mapped core JTBD:

    • Decide confidently without barriers (no stairs / unsafe slopes)

    • Know what to expect before starting (surface, incline, curb cuts)

    • Recover fast when conditions change (outages, closures, missing data)

      Found key pain points:

    • Uncertainty (hidden stairs/ramps, “step-free” claims not reliable)

    • Anxiety from last-minute obstacles

    • Low route confidence and limited fallback options

    • Confusing tradeoffs (shorter vs safer vs smoother)

Problem framming

How might we make barrier constraints (stairs, slope/grade, surface quality, outages) visible and explainable—so users can trust a route before committing and recover instantly when reality changes?

Information Architecture & Flows

Designed around decision moments (not screens):

  • Route selection: compare options with barrier badges (step-free, slope, surface, curb cuts)

  • Route explanation: “Why this route?” breakdown with tradeoffs + confidence signals

  • Plan/commit: show safest next step + what could change

  • Recovery: one-tap reroute + barrier alert + switch to safer mode

  • Edge states: missing data, conflicting signals, elevator outage, construction detour

Validation & Iteration

Prototype loops focused on:

  • Time to choose a safe route (decision speed without confusion)

  • Comprehension of tradeoffs (users can explain why one route is safer)

  • Confidence before starting navigation (trust signal clarity)

  • Recovery success when conditions change mid-route (reroute speed, lower anxiety)

    Refined route cards, badges, and “Why this route?” affordances—reducing ambiguity and improving decision confidence. Agar tu chahe, main Deliverables line bhi add kar dunga (1 line): Journey map • constraint model • flow diagrams • interactive prototype • confidence signals • edge-state library • handoff specs

Solution

Solution

AccessMap turns messy, real-world accessibility constraints into a calm, trust-first navigation system—so users can choose confidently, know what to expect, and recover instantly when conditions change. Packaged as a demo-ready prototype + a reusable pattern library (components, variants, edge states) with handoff-ready specs for consistent rollout.

1) Reusable system contribution

Built reusable components + variants (tokens, layout rules, states) and defined scalable patterns for constraint-aware routing—so UI behavior stays consistent across features and cities.

2) Demo-ready prototyping + spec handoff

Delivered clickable hi-fi prototypes + clean specs (redlines, variants, empty/loading/error/recovery) and partnered with engineering + QA—ensuring what we present matches what ships.

Step-free and Low-stress routing

Users choose routes using clear, controllable constraints (not hidden assumptions):

  • Step-free mode (avoid stairs entirely)

  • Slope tolerance (e.g., gentle / moderate / strict)

  • Surface quality filter (smooth / uneven / unknown)

  • Elevator status preference (reduce outage risk when possible)

  • Curb-cut presence (prefer confirmed curb cuts)

    Impact → safer defaults • fewer last-minute blockers • faster “safe route” choice

Confidence-based route cards

Each route surfaces decision-first clarity before commit:

  • Accessibility badges (steps, slope, surface, curb cuts, elevators)

  • Confidence signal (data coverage + recency + verification)

  • “Why this route?” explanation (tradeoffs + risk flags + what to expect)

  • Fallback options (safer alternative + minimum-risk route)

    Impact → fewer “surprise stairs” moments • higher trust • lower anxiety pre-start

Community-powered reporting

Reliability improves through lightweight reporting + verification:

  • Report barriers in 2 taps (stairs, blocked ramp, broken elevator, construction)

  • Upvote/verify reports to strengthen signal quality

  • “Last verified” timestamps + source labels (community/official/sensor)

  • Fast updates + route warnings to prevent mid-trip surprises

    Impact → fresher data over time • clearer trust cues • stronger long-term usability

⭐️

Connect to Content

Add layers or components to make infinite auto-playing slideshows.

Results

Results

Outcomes from AccessMap’s end-to-end UX work—focused on reducing uncertainty, speeding up decisions, and building trust for accessibility-critical navigation. Delivered as a demo-ready story and a reusable system that teams can ship consistently.

Faster route decisions

Route cards + accessibility badges made tradeoffs scannable (step-free, slope/grade, surface), so users compare options quickly instead of guessing.

Impact → faster “safe route” selection • fewer back-and-forth checks • lower decision fatigue

Higher confidence before starting navigation

“Why this route?” explanations + visible constraints made difficulty predictable upfront—reducing mid-trip surprises and anxiety.

Impact → fewer abandoned routes mid-trip • stronger trust in recommendations • clearer expectation-setting

Better recovery when the real world changes

One-tap reroute + barrier alerts supported quick recovery during elevator outages, construction, detours, or missing data.

Impact → fewer failed trips • smoother continuation • less time lost to re-planning

More reliable experience through feedback loops

Community reporting + verification signals improved data quality over time and kept routes current.

Impact → higher confidence over time • clearer “last verified” cues • stronger long-term usability

TL;DR

I turned accessibility constraints into a shippable, trust-first routing system—clear tradeoffs, confidence signals, and fast reroutes—delivered as a demo-ready prototype with edge-state coverage and handoff-ready specs.

Open to UX/Product Design Internships

© 2025 Prakhar Dewangan

Open to UX/Product Design Internships

© 2025 Prakhar Dewangan

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