1. Foundations on Issue
1.1. Traffic Lights time interval is different
1.1.1. Elderly people need more time to cross the road
1.1.2. Rush hours need rapid traffic light change to avoid traffic congestions
1.1.3. Safe traffic light system protects pedestrians
1.2. City Congestion Problem
1.2.1. Signal System hard to adjust to ad-hoc situations
1.2.2. Drivers and pedestrians without authority to change the traffic light signals
1.2.3. Ease of traffic accidents
2. Expected Value in Community
2.1. Social Good
2.1.1. Ease disabled people's difficulty in using transport systems
2.1.2. Raise social happiness
2.2. Environmental
2.2.1. Reduce Air Pollution
2.2.2. Reduce road congestion problem
2.2.3. Reduce unnecessary physical waits
2.3. Data Science
2.3.1. Encourage open-source of data for social good
2.3.2. Utilisation of public data
2.3.3. Develop cyber-city outlook
2.4. People
2.4.1. Encourage physical mobility for non-active users
2.4.2. Encourage elderly people to go out
2.4.3. Provide workers with work-life balance scheme
3. Positioning
3.1. Application for social good
3.2. Targeted Audience: General Public & Corporates & Public Services
3.3. Open-service platform
4. Limitations
4.1. OS compatibility
4.1.1. Different systems have different configurations
4.1.2. User Interface Capability
4.2. Data Access
4.2.1. Open-source data limited
4.2.2. Paid source data expensive
4.2.3. Governmental data not for commercial use
4.3. Technical Issue
4.3.1. Different configuration between traffic lights and mobile system
4.3.2. High system maintenance cost
4.4. Service Coverage
4.4.1. Hard to control all traffic lights
4.4.2. Service operated mainly in downtown areas, remote spaces lack network support