That the taxi system in Singapore has been systemically deficient for decades is generally acknowledged by commuters.

That it needs to upgrade itself to serve the public through the vast improvements demonstrated by Uber and Grab is also undeniable (Taxi companies must improve to compete, by Mr Francis Cheng; July 6).

But to expect incumbent taxi operators to cooperate with private-car hirers is unrealistic and naive, especially when their survival and existence is at stake.

Cars that trespass into bus lanes when they should not, and private cars that pick up passengers at taxi stands when it is illegal should be held to account.

What better way to prove illegality than photographic evidence? Catching culprits cannot, in any way, be equated to bullying (ComfortDelGro should be a 'big brother', not 'big bully', by Mr Chew Guan Sun; July 7).

Ambulances and buses are fitted with dashboard cameras to capture evidence of vehicles that do not give way or have strayed illegally into their paths. Why shouldn't taxi drivers be given similar rights?

Nothing beats a camera to keep drivers on the right side of the law. Didn't Land Transport Authority-installed cameras stop anti-social and illegal parking and stopping along congested roads and Electronic Road Pricing gantries almost immediately?

Yik Keng Yeong (Dr)