The army of yellow cabs that trolls New York City's streets was somewhat smaller Wednesday as some drivers idled their cars to protest new global-positioning technology the city wants installed in all taxis.

Exactly how many of the city's 44,000 licensed taxi drivers went on strike was hard to gauge: The group leading the work stoppage called it a "resounding success," while city officials said disruption was minimal.

Officials put the number of striking cabbies at about 20 percent; the taxi group put it at more than 90 percent.

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