Taxi drivers claim the technology is a costly invasion of their privacy and works erratically at best. The Taxi and Limousine Commission denounced that claim through tests showing the technology worked more than 99 percent of the time. I wish I got 99 percent accuracy on my unit out here.

While Bhairavi Desai, executive director of the Taxi Workers Alliance, said that 75 percent of all cabs were on strike, It isn't exactly clear how many drivers were honoring the 24-hour strike. The city said the vast majority of the city's 44,000 licensed taxi drivers were working.

Cabbie Jose Torres, who honored a two-day taxi strike last month, said he was working this time because he was afraid commuters would become accustomed to other means of transportation.

Last month, the alliance, which claims to represent about a fifth of the city's cab drivers, called their two-day strike a success. City officials claims that it had little effect.