Port Authority Tells Plans for Tunnel Rotary Redo   Officials of the Port Authority of New York and New Jersey told a committee of Community Board 1 on Nov. 6 that construction on a fifth Holland Tunnel exit, connecting the rotary to Varick Street, will begin next summer and completed the following spring. According to Port Authority projections, the new exit will help balance the flow of cars off the rotary. And the heavily trafficked pedestrian crosswalk at Ericsson and Varick will be safer, they said, because no right-hand turns will be allowed at the Varick Street exit. Right turns will be made from Exit 4, the planned new exit to the north. Eventually, the much-maligned rotary will not only move traffic out of the Holland Tunnel more swiftly, but it will be easier on the eye as well. Lighted public plazas, landscaped with seating, three varieties of trees, and special paving, will surround the circle— but not anytime soon. The Laight Street side will be finished in two years after construction begins in the summer. And plazas on the Ericsson and Hudson Street sides are even further in the future. Those sections are slated to be staging areas for the   three-to-five-year construction of a water shaft in the center of the tunnel rotary. The plazas can’t be completed until the equipment moves out. The Port Authority and the community board began discussing improvements to the rotary more than two years ago. In November, 2000, the backup of traffic leaving the tunnel was eased, especially at Laight and Hudson streets, with the advent of a no-right-turn rule onto Hudson. According to Port Authority figures, 35 percent of cars entered Tribeca at that exit before the new rule went into effect. Now, only 20 percent of traffic leaves at Laight and Hudson, and they say that overall there is a more even distribution of cars at all the exits. To see the Port Authority’s figures and projections on the Holland Tunnel Rotary, click below for their diagram.