An independent review committee looking into the city's franchised bus services has heard that the number of physical attacks on drivers by passengers has been increasing in recent years.
Lai Siu-chung, the deputy director of the Motor Transport Workers General Union’s KMB branch, told the panel that the problem is now getting serious.
Lai said on average there are several attacks each month, while the committee noted that documents show 40 cases were reported to the police in the first six months of this year.
Another representative of the union said people are discouraged from helping drivers being confronted by passengers as they fear they could end up being arrested themselves for fighting in a public place.
The committee was set up following a bus crash in Tai Po in February which killed 19 people. Reports said passengers had been arguing with the KMB driver shortly before the bus toppled over at a bend in the road.
The driver was later charged with dangerous driving causing death.