A family doctor said on Monday he hopes the government will clarify whether elderly drivers of commercial vehicles suffering from certain types of diseases are allowed to continue in their profession.

Authorities are mulling a proposal to require drivers aged 65 or above to undergo stricter physical exams annually that could also include detecting for signs of dementia and glaucoma – an irreversible eye disease that can lead to blindness.

Currently, only those aged 70 or above have to submit to a fitness certification every three years. The proposal was based on a plan submitted to the Legislative Council in 2023 that has yet to be passed.

Speaking on an RTHK radio programme, Dr Lam Wing-wo said some training might have to be offered to doctors on how they should carry out the stricter examination.

"Taking dementia as an example, we know that some people, as they grow older, their memories will become weaker, or some people will even start taking medications when their symptoms are very mild," he said.

"We hope to reach a better understanding with the industry as well as relevant parties. We do not want a blanket ban," he said, adding that many elderly drivers are very experienced and energetic despite their age.

"We hope that the checks can safeguard everyone and help detect any issues at an early stage so that the drivers can deal with it."

For now, fitness checks for drivers cover their eyesight, mental state, skeletal and muscular systems, balance and coordination, hearing and other aspects.

Lam said the government can also include sleep apnea – a sleep-related breathing disorder – in the certification process, and offer clear guidelines on the use of medications that have side effects.

Meanwhile, the Hong Kong, China Automobile Association welcomed the government's proposal.

The group's honourary life president, Ringo Lee, suggested that authorities also adopt technology to improve safety.

"For example, when the driver is nodding off, tired, or looks a bit odd, the vehicle will slow down by itself, turn on the hazard lights, or even stop," he told the same programme.

"Having the fitness exam requirement is very good, but we also need to add in a means of monitoring using new technology to enhance traffic safety."