N.Y. Comp. Codes R. & Regs. tit. 17, § 990.10 – Notification of bus accidents.

(a) Every public transportation bus system and/or public transportation bus service subject to the Safety Board shall give the Safety Board staff immediate notice and written notice, as further detailed in subdivisions (b) and (c) of this section, of the following accidents:
1. (1) all fatal accidents;
2. (2) any accident which results in five or more injuries to persons involved in the accident; and
3. (3) all accidents caused by mechanical failure, including but not limited to all fires that occur in revenue service that require passenger evacuation and response by a fire department regardless of whether or not injuries were incurred.
(b) Immediate notice of the above occurrences shall be reported by telephone to Safety Board staff at the published numbers for such calls. The list of said numbers shall be distributed to all public transportation systems and public transportation services and periodically updated. Immediate notice of all said accidents is required, and such notice shall not be delayed for more than 90 minutes. These notices, at a minimum, shall include the date, time and location of the occurrence and the approximate number of persons killed or injured. The person making the notification must provide his or her name and title, the public transportation system or service involved, and state where he or she can be reached for further details. In addition, the person must supply any additional information requested. The public transportation system or service must ensure the physical evidence of the accident scene is properly documented prior to the scene being cleared.
(c) A written notice shall be submitted to Safety Board staff unless otherwise specified by said staff, within two business days of any of the above occurrences, on the form entitled "Transit Bus Operator Accident Report" which is set forth in section 990.20(b) of this Part. All information on these forms shall be fully completed.