Meaning: 'Digital' refers to technologies that use computer systems and the internet, which can improve efficiency and effectiveness in urban transportation.

Wrong options:

• futuristic: While 'futuristic' suggests advanced technologies, it does not specifically imply the practical application needed in current urban systems.
• analogue: 'Analogue' refers to non-digital technologies, which would not optimize traffic flow or reduce emissions as effectively as digital technologies.
• outdated: 'Outdated' implies something that is no longer effective or relevant, which contradicts the need for modern solutions in urban transportation.

Correct answer: expanded

Explanation: The word 'expanded' is appropriate as it indicates the necessity to increase public transport systems to accommodate a growing population, fitting grammatically and contextually within the sentence.

Meaning: 'Expanded' means to increase in size, scope, or capacity, which is essential for meeting the demands of urban growth.

Wrong options:

• contracted: 'Contracted' means to decrease in size, which is contrary to the need for more public transport options in a growing urban area.
• static: 'Static' suggests no change or growth, which does not align with the dynamic needs of an increasing population.
• unchanged: 'Unchanged' implies no development or improvement, which is not suitable given the context of urban transportation demands.

Correct answer: green

Explanation: The term 'green' is contextually relevant as it refers to environmentally friendly infrastructure, which is essential for promoting sustainable transportation options like biking and walking.

Meaning: 'Green' refers to initiatives that are environmentally sustainable, particularly in the context of urban planning and infrastructure.

Wrong options:

• brown: 'Brown' typically refers to urban areas that are developed but not necessarily environmentally friendly, making it unsuitable here.
• blue: 'Blue' often relates to water bodies or water management, which does not fit the context of transportation infrastructure.
• grey: 'Grey' infrastructure refers to traditional, often less sustainable, urban infrastructure, which contradicts the goal of promoting non-motorised transport.

Correct answer: strategic

Explanation: The word 'strategic' is fitting as it emphasizes the importance of planning in a deliberate and thoughtful manner, which is crucial for developing an effective transportation system.

Meaning: 'Strategic' means carefully planned to achieve a specific goal, highlighting the necessity of foresight in urban transportation planning.

Wrong options:

• spontaneous: 'Spontaneous' implies a lack of planning or forethought, which is not suitable for effective urban transportation development.
• intuitive: 'Intuitive' suggests a natural understanding without formal planning, which does not convey the structured approach needed in transportation systems.
• logistical: 'Logistical' relates to the organization of complex operations, but does not capture the broader planning aspect required for future adaptability.

Correct answer: equitable

Explanation: The term 'equitable' is appropriate as it signifies fairness and accessibility in the transportation network, aligning with the goal of enhancing urban life for all residents.

Meaning: 'Equitable' means fair and just, ensuring that all residents have equal access to transportation options.

Wrong options:

• identical: 'Identical' means exactly the same, which does not relate to the concept of fairness or accessibility in transportation.
• parallel: 'Parallel' suggests similarity but does not convey the idea of fairness or equal access, which is essential in urban planning.
• divergent: 'Divergent' implies moving apart or differing, which contradicts the goal of creating a unified and fair transportation network.