What if ...

What if the number of buses running in Hong Kong are reduced by 50%? In such a case, what would happen to ...

• ... the Air Pollution Index (API) in Hong Kong?
• ... the overall air quality?
• ... the noise pollution?
• ... the road side temperature in high-traffic regions like CWB or MK (especailly along Nathan Road) or TST?
• ... the traffic conditions in the following areas? ie: Nathan Road (MK), Queen's Road Central (Central), Cross Harbor Tunnel, Hennessy Road (CWB) and Canton Road (TST).

I really wonder what if ...