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Development of an Assisted Crossing Mobile Application for Enhanced Pedestrian Accessibility

3sidedcube.com

Government

Environmental Services

Information Technology

Challenges in Assisting Visually Impaired Pedestrians in Low-Speed Environments

Need for a non-intrusive, accessible solution to help visually impaired pedestrians safely navigate unsignalized road crossings in low-speed zones through real-time sensor data interpretation.

About the Client

Local government authority focused on urban development and accessibility initiatives

Goals for the Assisted Crossing Application Development

Create an intuitive mobile interface with 95%+ accuracy for road-crossing safety alerts
Integrate Siemens sensor data with mobile device capabilities
Implement multimodal feedback (voice, vibration, visual) for accessibility
Ensure seamless user experience through proximity-based sensor activation
Validate reliability through extensive user testing with visually impaired individuals

Core System Functionalities and Features

Proximity-based sensor connection at 45-meter range
Real-time vehicle detection alerts (approaching/stopped)
Customizable vibration patterns for different scenarios
VoiceOver/ScreenReader compatibility
Notification suppression during crossing mode

Technology Stack and Implementation Requirements

Android SDK

Bluetooth Low Energy (BLE) for sensor communication

Text-to-Speech APIs

Haptic feedback APIs

Geofencing capabilities

System Integration Requirements

Siemens road sensor network
Mobile operating system accessibility services
Location services API

Performance and Compliance Standards

95%+ detection accuracy in varied lighting/weather conditions
Response time under 500ms for safety-critical alerts
Compliance with WCAG 2.1 accessibility standards
Battery-efficient sensor polling mechanism
Data privacy compliance (GDPR)

Expected Impact on Pedestrian Safety and Accessibility

Implementation of this solution is projected to reduce road-crossing incidents for visually impaired pedestrians by 40% while establishing a scalable smart city accessibility framework that could be adopted across 100+ UK municipalities by 2025.