Financial incentives should be given to taxi drivers to encourage them to convert their vehicles to liquefied petroleum gas, a legislator says. Ronald Arculli, Liberal Party vice-chairman, said on RTHK's Letter to Hong Kong: 'Don't forget taxi owners collectively paid hundreds of millions of dollars to the Government for their licences. 'The Government could set up a fund where loans with little or no interest charge and easy repayment terms can be made to enable the switch to LPG.' Mr Arculli said about $2 billion was required to fund the initial cost, if all 18,000 taxis were replaced under the proposed three-year programme. 'Perhaps Sir Donald Tsang, our Financial Secretary, who was overheard saying that funding such a scheme was no problem, was quite serious and maybe we'll hear something in his 1999-2000 Budget on March 3,' he said. Mr Arculli said drivers must be encouraged to switch off their engines while waiting. 'We might even have to consider outlawing this, although formulation and enforcement would be difficult,' he said.