219.301—Testing for reasonable cause.

(a) Authorization. A railroad may, under the conditions specified in this subpart, require any covered employee, as a condition of employment in covered service, to cooperate in breath or body fluid testing, or both, to determine compliance with §§ 219.101 and 219.102 or a railroad rule implementing the requirements of §§ 219.101 and 219.102. This authority is limited to testing after observations or events that occur during duty hours (including any period of overtime or emergency service). The provisions of this subpart apply only when, and to the extent that, the test in question is conducted in reliance upon the authority conferred by this section. Section 219.23 prescribes the notice to an employee that is required when an employee is required to provide a breath or body fluid specimen under this part. A railroad may not require an employee to be tested under the authority of this subpart unless reasonable cause, as defined in this section, exists with respect to that employee.
(b) For cause breath testing. In addition to reasonable suspicion as described in § 219.300, the following circumstances constitute cause for the administration of alcohol tests under this section:
(ii) Failure to protect a train as required by a rule consistent with § 218.37 of this chapter (including failure to protect a train that is fouling an adjacent track, where required by the railroad's rules);
(c) For cause drug testing. In addition to reasonable suspicion as described in § 219.300, each of the conditions set forth in paragraphs (b)(2) (“accident/incident”) and (b)(3) (“rule violation”) of this section as constituting cause for alcohol testing also constitutes cause with respect to drug testing.
(e) Limitation for subpart C events. The compulsory drug testing authority conferred by this section does not apply with respect to any event subject to post-accident toxicological testing as required by § 219.201. However, use of compulsory breath test authority is authorized in any case where breath test results can be obtained in a timely manner at the scene of the accident and conduct of such tests does not materially impede the collection of specimens under subpart C of this part.