The family of a tram driver who was crushed by another tram as he leapt from his own burning vehicle has filed a writ against Hongkong Tramways. Sze Tat-tung, 38, was hit on January 1, 1996, when he jumped out of his cabin after the speed controller on his tram caught fire. Yesterday his widow, Lam Chun-chun, 37, submitted a claim for damages on behalf of herself and her son Sze Chi-wai, 16. She is demanding money to cover her husband's lost earnings and compensation for the suffering his death caused. The $643,000 the company has already paid out will be taken into account. In the writ, the tram firm is blamed for failing to fulfil the terms of Sze's contract, under which it is claimed the company should have taken 'all necessary precautions for the safety of the deceased while he was engaged in carrying out his work'. The family claims Hongkong Tramways had not carried out sufficient safety checks or provided an adequate escape route. It was negligent, they say, to allow a tram to be used with a defective brake system, which has been blamed for causing the fire. The accident left Sze, who had finished his training only a fortnight earlier, with critical head injuries. He died in hospital the following day. Hongkong Tramways has 14 days to respond to the action.