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ESC102S – Praxis II – F3008-05. Design Critique. Improving the Emergency System of the TTC along the Yonge -University- Spadina Line. Wen Li, Tom Zhang, Jae Kim & Marcel Grzeszczyk. Overview. Reframin g Scoping & requirements Design Process Goals of the solution
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ESC102S – Praxis II – F3008-05 Design Critique Improving the Emergency System of the TTC along the Yonge-University-Spadina Line Wen Li, Tom Zhang, Jae Kim & Marcel Grzeszczyk
Overview • Reframing • Scoping & requirements • Design Process • Goals of the solution • Early Ideas, sketches, prototype • Current Best Design • Idea Selection • Key Design Decisions & Considerations
Reframing • Narrowed and prioritized scope. • Primary problem: accidental alarm activations. • Secondary problem: Activations due to human error. • Added Accessibility to list of requirements.
Design Process Decomposed problem into more specific groups: • Leaning on emergency handle, pushing with elbow. • Grabbing emergency handle when losing balance. • Leaning on PAA strip with head. • Contacting PAA strip with large objects (skis, wheelchairs). • Lack of awareness (warning signs not effective). This was done while keeping the current functions of the emergency system such as safety and accessibility.
Current Best Design Outweighs other designs in criteria all-around. • Slightly altered warning sign. • Added warning lights. • Combined with Emergency Intercom. • Reduces accidental activations. • Increases efficiency of emergency response. • Added edges above and below. • Protect against objects touching alarm and leaning on alarm while maintaining accessibility.