1. Short title This Act may be cited as the Don’t BLock Our Communities Act or the D-BLOC Act . 2. Definitions In this Act: (1) Secretary The term Secretary means the Secretary of Transportation. (2) Crossing The term crossing has the meaning given the term under section 20160 of title 49, United States Code. (3) Blocked crossing The term blocked crossing means a circumstance in which a train, railroad car, or locomotive engine is stopped or is standing in a manner that obstructs public travel at a crossing. (4) Commuter authorities The term commuter authorities has the meaning given the term in section 24102 of title 49, United States Code. 3. Collection of data on blocked crossings and incorporation into the national highway-rail crossing inventory (a) In general Section 20160 of title 49, United States Code, is amended to read as follows: 20160. National crossing inventory and blocked crossings (a) Initial reporting of information about previously unreported crossings Not later than 1 year after the date of enactment of the Rail Safety Improvement Act of 2008 or 6 months after a new crossing becomes operational, whichever occurs later, each railroad carrier shall— (1) report to the Secretary of Transportation current information, including information about warning devices and signage, as specified by the Secretary, concerning each previously unreported crossing through which it operates with respect to the trackage over which it operates; or (2) ensure that the information has been reported to the Secretary by another railroad carrier that operates through the crossing. (b) Updating of crossing information (1) Monthly basis On a monthly period beginning not later than 1 year after the date of enactment of the Don’t BLock Our Communities Act, each railroad carrier shall report to the Secretary information concerning each crossing through which it operates with respect to the trackage over which it operates, including— (A) with respect to warning devices— (i) the type of crossing warning device