THE Land Transport Authority booked 1700 PSV drivers around the country last year for using their mobile phones while driving.
LTA spokesman Iliesa Sokia said the excessive use of mobile phones by PSV drivers had become a major concern.
Mr Sokia said according to their observations, the trend and behaviour had increased.
"Meanwhile, other drivers caught using mobile phones while driving will also have their licence suspended," he said.
"The authority will conduct an internal probe by checking their driving records and the number of TINS (traffic infringement notices) issued against them.
"The authority will suspend the licence of drivers who have more than 20 to 25 TINS issued against them."
Mr Sokia said this exercise was a means to remove drivers who fail to follow road rules from the road and minimise chances of road accidents from happening.
"Other code of conduct violations include breach of dress codes.
"Most PSV drivers are seen with casual attire which isn't presentable and professional — it's simply unacceptable.
"We see drivers wearing earrings, caps, three quarter trousers and flip flops. This is not the dress code stipulated in the code of conduct."
Mr Sokia said PSV drivers must realise they were public servants like any civil servant.
"While civil servants serve customers in the office, drivers serve them through the means of transportation and they must serve customers professionally.
"The LTA is urging PSV drivers to take pride in their work, be passionate about it and change their attitude towards their service to the general public."