LTA chief executive Naisa Tuinaceva has reminded public service drivers to look after their health.
The LTA has again come across cases of overworked PSV drivers dozing off behind the wheel.
Mr Tuinaceva urged members of the public to report cases of PSV drivers falling sleep while driving.
"You simply don't overwork yourself for the sake of money," Mr Tuinaceva said.
"You drive the whole day and the entire night and you expect to continue for next day? It's self-inflicted death.
"So, to all PSV drivers, don't put your life in danger, and most importantly the lives of your passengers.
"Know your limit, don't push yourself for money."
Mr Tuinaceva said PSV drivers must ensure they were fit mentally and physically.
"LTA has had cases of PSV drivers drinking yaqona the entire night and waiting for dawn to break to resume driving without considering their health."