The Bangkok Mass Transit Authority (BMTA), meanwhile, is also mulling the revival of the lady bus service.
The lady taxi project is not intended to segregate public transport but to provide a safe environment for women who usually commute through the city at night, according to the ministry.
The taxis, to be driven by women, will pick up only women passengers.
Safety works both ways, for the female passengers as well as the women taxi drivers, said Asdsathai Rattanadilok Na Phuket, deputy director-general of the Land Transport Department.
He said the idea was discussed during the 72nd anniversary celebration of the department in August.
Before the project goes ahead, the department needed to formalise and enact necessary ministerial regulations, which are now being drafted.
The regulations will be submitted to the transport minister for approval.
"The matter has been brought up with the taxi cooperatives and most of them have shown interest in joining the scheme. Women prefer to ride in taxis driven by women," he said.
For a lot of women who take a taxi home late at night through dimly lit roads, who is at the wheel matters. They feel safer if the driver is a woman.
"Also, female taxi drivers tend to be more courteous. This will make passengers more confident," Mr Asdsathai said.
Details of the plan to implement the lady taxis will be finalised within this year, he added.
The new ministerial regulations will govern the qualifications of female drivers, the appearance and equipment of taxis and the fare, which may be higher than for ordinary taxis.
According to the department, lady taxis will be permitted to turn down male passengers. The taxis may be equipped with position-tracking and navigational devices as well as radios.
The lady taxis could be painted in striking pink.
"But the problem is that there are not that many female taxi drivers around. If the policy is clear, it will be publicised and women will be encouraged to drive these taxis," Mr Asdsathai said.
He said if the government offers full support, more female drivers could be trained.
However, the Transport Ministry appears to be lukewarm about the project.
Transport Minister Chadchart Sittipunt said although the project had merits, it needed careful study.
"It will be some time before we can say for certain if the project will be feasible to implement," he said.
However, a taxi driver in Chiang Mai has taken the initiative and started a shuttle service catering to women.
The driver, who asked to be identified only as Koi, said she has run the lady taxi service in Chiang Mai for five years.
"Most of the customers are Thai and foreign tourists. They say they feel safer with female drivers," she said.
The fare for urban areas of Chiang Mai is calculated by the meter with a minimum charge of 50 baht. The fare for out-of-town trips is negotiable.
Amolwan Sa-nguanwongsakul, the 43-year-old operator of a taxi service based on Bangkok's Sukhumvit Road, supports the lady taxi idea.
However, she wonders if there will be enough female drivers to take part in the project if demand for them grows.
"I don't think the number of female taxi drivers exceeds 200. There are now about 100,000 taxis plying the roads in Bangkok," she said.
"Female drivers could be less patient than male drivers. I would like the government to look closely at how to protect the female drivers as well because statistics show that drivers being attacked outnumber the number of passengers who are victims of attacks in taxis."
Yada Hariraksapitak, a 23-year-old worker, welcomed the lady taxi idea. She said she once had a close call involving sexual molestation in a taxi.
The project would boost public safety because taxis are a popular mode of travel through the city.
Paveenarat Fueangseemai, 23, said a lady taxi service was long overdue.
Customers can choose which taxis to catch by looking at their outer appearance. Many people prefer new taxis, but when it comes to choosing female drivers, it is very difficult because there are not that many of them.
BMTA director Opas Phetmunee said the state enterprise has also considered dusting off the lady bus project in Bangkok.
In 2000, the lady bus was put into service at specific times on certain days but it was later suspended.
Mr Opas said it was unclear to him why that occurred.
He said if the service was to be brought back, the BMTA was considering whether key personnel for the operation, such as clerks at the bus depots, drivers and conductors, would all be women.
He said he planned to work out the details of the service in two weeks in order for it to be revived.