Nelson said DOT started using a Geographic Information System program developed by the conservancy's Adirondack researchers last year.

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Currently, about 15 major carriers provide monthly incident reports to the DOT, which posts that information online.

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Under the proposal, which Mr. Silver said he expected to send to Gov. Andrew Cuomo in the next few weeks, the DOT would begin issuing permits to bus companies that would also allow the city to begin gathering information about their operations.

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