Increased fines for traffic offences are expected to come into force in July, says the House committee on transport.

Under the bill, the fine for traffic offences such as failing to comply with traffic signs will be increased four-fold from 1,000 baht to 4,000 baht, said the committee.

The House committee has been working on road safety rules, especially speeding, and is pushing for stricter regulations for riders of big bikes -- who must have a special licence -- to curb accidents involving such vehicles.

Motorists who fail to stop at pedestrian crossings will be fined up to 4,000 baht, he said.

The safety of pedestrians has become a hot topic after a fatal accident in which Pol L/C Norawich Buadok rode his Ducati into a doctor while she was using a zebra crossing last Friday.

The result of a forensic examination will determine if the policeman is to be charged with speeding. The result is expected today.

Meanwhile, a Myanmar woman was seriously injured when she was hit by a pickup truck on Wednesday night in Samut Prakan's Bang Phli district, police said.

The victim was using a pedestrian crossing when the vehicle ran into her. Police said the motorist was initially charged with reckless driving causing injuries to others. He could also be charged with failing to stop for others.