How often must a tanker endorsement be renewed?
a.Every year
b.Every 2 years
c.When the CDL is renewed, typically every 4 to 5 years depending on the state
d.Only once, it never expires
Explanation
A tanker endorsement must be renewed when the CDL is renewed, which is typically every 4 to 5 years depending on the state. Drivers may need to pass a knowledge test again at renewal time depending on state requirements.