### Question
How does TRANSPORTATION OF HAZARDOUS MATERIAL define obstructs?


### Answer
Under *49 U.S.C. § 5123*, **obstructs** is defined as:

> actions that were known, or reasonably should have been known, to prevent, hinder, or impede an investigation

#### Citation:
  - *49 U.S.C. § 5123*
  - Heading: **SUBTITLE III-GENERAL AND INTERMODAL PROGRAMS > CHAPTER 51-TRANSPORTATION OF HAZARDOUS MATERIAL**

