[5][6] A 2001 study removed the line serving the former runway area, replacing it with a proposed "trolley bus or light rail system".

[9] On 12 March 2024, a similar environmentally friendly transit system was proposed, but it would only serve Kai Tak and not connect to Kwun Tong as per the original plan.

Norman Y. S. Heung, project manager from the Civil Engineering and Development Department, responded that it would not be acceptable for a tramway to share ground space with cars.

[11] Emmanuel Vivant, general manager of Hong Kong Tramways, responded that "in a city that rightly prides itself on putting priority on public transport, and where only 10 per cent of trips are done by private car, it should not be impossible to allocate space to tram lanes that can each carry eight times as many people as a road lane" and that "promoting usage of emission-free modern tramways rather than polluting private cars, would be a perfectly sensible policy decision.

After considering estimated passenger and fire safety issues, the Civil Engineering and Development Department took the MTR walk-in catchment coverage as an indicator for the selection of the EFLS station site.