
There are exceptions, but in most cases the transportation in commerce of any quantity of a hazardous material will require the display of placards on each side and each end of each of the following:
- Bulk packaging
- Freight container
- Unit load device
- Transport vehicle; this includes a motor vehicle (see below for a definition)
- Rail car
When it comes to placards, compliance with the Hazardous Material Regulations (HMR) requires three things:
- Determine what placards are required pursuant to 49 CFR 172.504.
- Select a placard of the correct specifications at 49 CFR 172.519.
- Display the placard properly according to the requirements of 49 CFR 172.516.
This article will address the requirements of 49 CFR 172.516 Visibility and display of placards. (more…)