User Experience and Accessibility Flashcards

Which payment method must be offered at public EVSE units to comply with the National Electric Vehicle Infrastructure (NEVI) Formula Program accessibility requirements?

Answer: Credit/debit card payment without requiring a network membership account

NEVI program rules require that chargers accept credit/debit card payment without mandatory network enrollment so any driver can use them.

Under NEVI requirements, what must the price display show to the user BEFORE they authorize payment at a DC fast charger?

Answer: Price per kWh or per minute, and any applicable fees

NEVI rules require transparent pricing disclosure of the per-kWh or per-minute rate and all fees before the user commits to the session.

A charging station's touch interface does not respond reliably when a user wears gloves. Which hardware solution best addresses this accessibility concern?

Answer: Install a physical keypad with large tactile buttons alongside the touchscreen

Physical tactile buttons accommodate users with gloves, limited dexterity, or fine motor impairments that prevent reliable touchscreen interaction.

What is the primary user experience benefit of real-time charger availability data integrated into navigation apps like Google Maps or Apple Maps?

Answer: Drivers can plan routes to occupied chargers and avoid wasted trips

Real-time availability data in navigation apps prevents drivers from arriving at a full station, reducing range anxiety and unnecessary detours.

An EV charging station error message reads: 'ERR_AUTH_FAIL_0x4C.' Which UX best practice has been violated?

Answer: Error messages should use plain language and actionable instructions instead of codes

Plain-language error messages that tell users what went wrong and what to do next (e.g., 'Card not accepted — try a different card or call support') follow UX best practices.

Which feature of a charging network mobile app most directly supports drivers with cognitive disabilities during a charging session?

Answer: Step-by-step guided session start with visual progress indicators

Step-by-step guidance with clear visual progress cues reduces cognitive load and helps users with cognitive disabilities complete the charging process independently.

What should happen automatically when a charging session ends at a NEVI-compliant station to prevent blocking behavior and improve user experience?

Answer: The driver should receive a notification via the network app or SMS that charging is complete

NEVI-compliant stations are expected to notify drivers upon session completion so vehicles can be moved promptly, reducing queue times for other users.