Build the foundation every Florida CDL applicant needs.
General Knowledge supports every CDL class. This Florida set combines standard commercial-driving safety with current permit supervision, ELDT, Clearinghouse, and state examination rules.
01Vehicle inspection
02Speed and space
03Backing and turns
04Weather and emergencies
05Cargo safety
06Florida CLP and exam rules
PRACTICE MODE
Florida CDL General Knowledge Test
Question order and answer order shuffle on each attempt. Choose one answer, read the explanation, then use Back or Next to continue.
Question 1 of 25Score 0
What minimum tread depth is generally required in every major groove of a front steering tire?
Answer: 4/32 inch
Steering-axle tires generally need at least 4/32 inch of tread in every major groove. Other tires generally require at least 2/32 inch. Study: Florida CDL Manual — Section 2: Driving Safely — vehicle inspection
Below 40 mph, what following-distance guideline applies to a commercial vehicle?
Answer: At least 1 second for each 10 feet of vehicle length
The standard guideline is at least one second for each 10 feet of vehicle length at speeds below 40 mph. Add another second when traveling faster than 40 mph. Study: Florida CDL Manual — Section 2: Driving Safely — space management
When should most speed reduction for a curve occur?
Answer: Before entering the curve
Slow to a safe speed before entering a curve, then use smooth control inputs. Hard braking in a curve can increase skid or rollover risk. Study: Florida CDL Manual — Section 2: Driving Safely — curves
What is the first safe response to a tire blowout while moving?
Answer: Hold the steering wheel firmly and stay off the brake initially
A firm grip helps maintain direction while the vehicle slows. Braking hard immediately can worsen loss of control; slow gradually and move off when stable. Study: Florida CDL Manual — Section 2: Driving Safely — tire failure
When should a driver dim high beams for an approaching vehicle?
Answer: Before the lights create glare for the other driver
High-beam glare can temporarily reduce another driver’s vision. Dim them early enough to protect both drivers’ ability to see. Study: Florida CDL Manual — Section 2: Driving Safely — night driving
Before crossing railroad tracks, what must a driver be sure of?
Answer: There is enough space to clear the tracks completely
Never enter a crossing unless the entire vehicle can clear all tracks. A long combination needs more clearance than a passenger car. Study: Florida CDL Manual — Section 2: Driving Safely — railroad crossings
What is the only reliable cure for fatigue?
Answer: Sleep
Short-term tricks do not replace restorative sleep. If drowsy, stop in a safe place and sleep before continuing. Study: Florida CDL Manual — Section 2: Driving Safely — driver fitness
Why is a front-wheel skid especially dangerous?
Answer: The vehicle tends to continue straight despite steering input
When front tires lose traction, steering may have little effect. Slow before turns and avoid excessive speed or hard braking that can trigger the skid. Study: Florida CDL Manual — Section 2: Driving Safely — skids
How should cargo weight generally be distributed?
Answer: As low and balanced as practical
Balanced, low placement improves stability and prevents overloading an axle or tire. Poor distribution can impair steering, braking, and rollover resistance. Study: Florida CDL Manual — Section 2: Driving Safely — cargo distribution
Why should engine retarders be used cautiously on slippery roads?
Answer: They can cause drive wheels to lose traction
A retarder slows the drive wheels and can contribute to a skid on poor traction. Follow the manufacturer’s guidance and turn it off when conditions require. Study: Florida CDL Manual — Section 2: Driving Safely — retarders
How should a professional driver respond to an aggressive driver?
Answer: Avoid confrontation and create space
Do not escalate aggressive behavior. Increase space, let the vehicle go, and contact authorities if there is an immediate danger. Study: Florida CDL Manual — Section 2: Driving Safely — aggressive drivers
Why is smooth steering especially important in a large vehicle?
Answer: Abrupt steering can cause a skid, cargo shift, or rollover
Large and top-heavy vehicles respond poorly to sudden direction changes. Look ahead and steer gradually so the vehicle remains stable. Study: Florida CDL Manual — Section 2: Driving Safely — steering
Before starting the engine, what should a driver confirm about the parking brake?
Answer: It is set
Setting the parking brake helps prevent unintended movement while the engine is started and initial checks are completed. Study: Florida CDL Manual — Section 2: Driving Safely — starting procedure
Why must brake drums or discs be free of oil and grease?
Answer: Contamination can reduce braking friction
Braking depends on friction. Oil or grease on friction surfaces can greatly reduce stopping ability. Study: Florida CDL Manual — Section 2: Driving Safely — brake inspection
Where should a backing helper stand?
Answer: Where the driver can see the helper clearly
The driver and helper must maintain clear communication. Stop immediately if the helper disappears from view. Study: Florida CDL Manual — Section 2: Driving Safely — backing helper
Why must tail swing be considered before a turn?
Answer: The rear can swing into nearby hazards
As the front turns one way, the rear overhang can move the opposite way and strike objects or people. Study: Florida CDL Manual — Section 2: Driving Safely — tail swing
When is the horn most appropriate?
Answer: When needed to alert others to danger
The horn is a warning device. Use it briefly when doing so may prevent a collision. Study: Florida CDL Manual — Section 2: Driving Safely — horn use
Why should windshield glass and mirrors be kept clean?
Answer: Dirt and glare can hide hazards
Clear glass and mirrors improve early hazard recognition, especially at night, in rain, or in low-angle sunlight. Study: Florida CDL Manual — Section 2: Driving Safely — visibility
What should be done before beginning a steep downgrade?
Answer: Select a safe gear and speed
Early gear selection lets engine braking assist and reduces heat buildup in the service brakes. Study: Florida CDL Manual — Section 2: Driving Safely — mountain driving
Why must cargo not block emergency equipment?
Answer: The driver may need immediate access
Fire extinguishers, warning devices, and other emergency equipment must remain accessible. Study: Florida CDL Manual — Section 2: Driving Safely — cargo placement
How long must a Florida CLP generally be held before the CDL skills test?
Answer: At least 14 days
The current federal CDL standard requires a CLP to be held for at least 14 days before the CDL skills test. Study: FMCSA — Commercial Driver License Program
Which Florida CDL applicants are subject to Entry-Level Driver Training before the applicable skills or knowledge test?
Answer: First-time Class A or B applicants, B-to-A upgrades, and first-time P, S, or H applicants
Florida’s CDL manual reflects the federal ELDT rule for first-time Class A/B, B-to-A upgrades, and first-time P, S, or H endorsements. Study: Florida CDL Manual — FLHSMV
While a Florida commercial instruction-permit holder practices in a CMV, where must the qualified accompanying CDL driver sit?
Answer: In the closest seat to the right of the learner
Florida Statute 322.07 requires the qualified accompanying driver to occupy the closest seat to the right of the permit holder. Study: 2026 Florida Statutes — Chapter 322
What minimum age must the accompanying driver be for a Florida commercial instruction-permit holder?
Answer: 21 years old
Florida Statute 322.07 requires the accompanying driver to be at least 21 years of age and licensed for the class of vehicle being operated. Study: 2026 Florida Statutes — Chapter 322
What can make a Florida applicant ineligible for a temporary commercial instruction permit even if other qualifications are met?
Answer: A Clearinghouse notification that the applicant is prohibited from CMV operation
Florida Statute 322.07 prohibits issuance when the department has been notified of a CMV-operation prohibition under 49 CFR 382.501(a). Study: 2026 Florida Statutes — Chapter 322
Use practice to find the handbook sections you still need.
01
Answer without guessing from memory
Use the first attempt to expose weak knowledge instead of memorizing answer positions.
02
Read every explanation
When a rule is Florida-specific, confirm it in the current FLHSMV material linked below.
03
Retake after review
Aim for consistent mastery across both the Florida mixed test and every focused test your CDL goal requires.
COMMON QUESTIONS
General Knowledge practice test FAQ
Is this Florida General Knowledge practice test free?
Yes. The 25-question practice test, instant feedback, scoring, and answer explanations are available without registration.
Are these official FLHSMV exam questions?
No. They are original study questions written from FLHSMV and standard CDL handbook topics. The FLHSMV controls the real knowledge and skills examinations.
Should I still read the Florida Commercial Driver’s License Manual?
Yes. Use the current Florida Commercial Driver’s License Manual and FLHSMV instructions as the final authority, especially for licensing steps, restrictions, medical rules, and state-specific procedures.
What score should I aim for while practicing?
Aim for at least 80 percent in practice, and preferably higher. Confirm current official passing requirements with FLHSMV and review every missed explanation.
FACT-CHECKED STUDY BASIS
FLHSMV and federal sources
These are original study questions, not copied licensing-exam questions. FLHSMV guidance and the current Florida Commercial Driver’s License Manual control state procedures; federal standards apply where incorporated.
Important: CDL Test Practice is an independent study website and is not affiliated with FLHSMV or FMCSA. Rules and procedures can change; verify current official instructions before applying or testing.