Test prep
What to Expect on the CDL Hazmat Test (Format and Topics)
What the CDL hazmat knowledge test looks like: the format, the topics it covers, where you take it, and why details like question count vary by state.
Lawrence Arya··5 min
Placards
When Are Hazmat Placards Required? Table 1 and Table 2
A clear explanation of when hazmat placards are required, the difference between Table 1 and Table 2 materials, and the 1,001-pound rule that trips up CDL students.
Lawrence Arya··6 min
Test prep
Who Regulates Hazmat? PHMSA, FMCSA, TSA, and More
Which agencies regulate hazardous materials transport and what each one does, from PHMSA writing the rules to FMCSA enforcing them on the road.
Lawrence Arya··5 min
Test prep
Why People Fail the CDL Hazmat Test (and How to Avoid It)
The most common reasons people fail the CDL hazmat knowledge test, from skipping the manual to confusing placards, and the fix for each one.
Lawrence Arya··6 min
Placards
How to Read a Hazmat Placard: A Simple Step-by-Step Guide
A clear, step-by-step way to read any Hazmat placard: color, symbol, class number, and ID number, in that order.
Lawrence Arya··5 min
Study tips
A 5-Minute Daily CDL Hazmat Study Routine
A simple, repeatable daily routine for building fast Hazmat placard recognition without burning out.
Lawrence Arya··5 min
Study tips
5 Common Hazmat Placard Mistakes (and How to Avoid Them)
The placard errors that quietly cost CDL students points, and a simple fix for each one.
Lawrence Arya··6 min
Placards
Hazmat Placard Colors Explained for CDL Students
What each Hazmat placard color signals, why color is the fastest first clue, and where color alone is not enough.
Lawrence Arya··6 min