Idaho CDL Practice Tests
Idaho issues commercial driver licenses through the Idaho Transportation Department (ITD) Division of Motor Vehicles. The state follows federal CDL rules in its Commercial Driver's License Manual. You can drive a commercial vehicle inside Idaho at 18. You must be 21 to drive across state lines or carry hazardous materials.
Based on the official state DMV CDL manual.
Idaho CDL quick facts
18 to drive a CMV within Idaho.
21 to drive across state lines.
14 days minimum before the skills test.
~50 Qs; 80% to pass.
Sources: Idaho CDL Manual PDF (July 2025) ITD Commercial Driveru0027s License page Ten Steps to getting an Idaho CDL
Idaho CDL practice tests
Which class fits the Idaho truck job you want?
Idaho CDL resources
Idaho CDL FAQ
How old do I need to be to get a CDL in Idaho?
You must be at least 18 to drive a commercial vehicle inside Idaho. You must be 21 to drive across state lines or carry hazardous materials.
How long must I hold my Idaho CLP before the skills test?
You must hold your Commercial Learneru0027s Permit for at least 14 days before you can take the CDL skills test.
How much does an Idaho CDL cost?
The CLP is $29, each written test is $5, the skills test is $10 (plus Examiner fee), and the 4-year CDL is $40 (or $60 for 8 years).
Do I need to take Entry-Level Driver Training in Idaho?
Yes. If you are getting your first Class A or B CDL, or your first H, P, or S endorsement, you must complete federal ELDT from an FMCSA-registered provider.
Do I need a DOT medical card to get an Idaho CDL?
Yes. You must complete a DOT medical exam and self-certify through ITDu0027s online system.
What is the official Idaho CDL manual?
The Idaho Commercial Driveru0027s License Manual (July 2025) is the official study guide. You can download it free from itd.idaho.gov.