The long-dreamed-of Second Avenue subway will take another important step toward becoming a real thing of concrete and steel today, as the federal government plans to announce that it has formally approved $1.3 billion in financing for the project's first phase.

Transportation Secretary Mary E. Peters said in an interview that the money would be paid out over the next seven years as construction progresses on the subway's first leg, which will have stops on Second Avenue at 92nd, 86th and 72nd Streets and at 63rd Street and Lexington Avenue.

The Metropolitan Transportation Authority began preliminary work on the line after Gov. Eliot Spitzer held a ceremonial groundbreaking in April.

Ms. Peters said the federal money would pay for about one-third of the work on the first phase, which is expected to cost more than $4 billion. The first leg is scheduled to open in 2014, and it will run as an extension of the Q line.

Taxi drivers are the most enduring oppressed minority in New York City history. Race, ethnicity and religion are not sources of the oppression. It lies entirely in the nature of the work. Trapped for about 12 hours each day in the worst traffic in the United States, taxi drivers must suffer the savage frustrations of jammed streets, double-parked cars, immense trucks, drivers from New Jersey - and they can't succumb to the explosive therapy of road rage. Their living depends on self-control.

At the same time, they face many other hazards: drunks behind them in the cab, fare beaters, stickup men, Knicks fans filled with biblical despair, out-of-town conventioneers who think the drivers are mobile pimps. Some seal themselves off from the back seat with the radio, an iPod or a cellphone. All pray that the next passenger doesn't want to go from Midtown to the far reaches of Brooklyn or Queens. They hope for a decent tip. They hope to stay alive until the next fare waves from under a midnight streetlamp.

In this informative, solid history, Graham Russell Gao Hodges traces the story of the cabdrivers from 1907, when the first metered taxis appeared on New York streets, to the present. He writes with obvious sympathy, having driven a hack himself before moving on to academic labors as a historian at Peking University and Colgate. Loneliness is a running theme in "Taxi!": if the title were not already taken, Hodges could have called his compact history "One Hundred Years of Solitude.