Delaware CDL Practice Test (DE) 2026

4.9 out of 5 (68 votes)
80% Passing score
20 Questions
4 Mistakes allowed
As a Delawarean preparing for your CDL in 2026, you've found the right place to begin with our first of many Delaware CDL practice tests. This tool is designed to simulate the actual DMV experience, presenting 20 questions mirroring the variety and format you will encounter on test day. With a requirement to correctly answer at least 16 questions, this Delaware CDL practice test offers a comprehensive overview of essential topics. The test is structured to reflect the real CDL written test in 2026 with multiple-choice and true/false questions. This format aids in refining your test-taking strategy, helping you learn to identify and discard incorrect answers efficiently. In addition to traditional questions, our Delaware CDL general knowledge practice test incorporates scenarios that mimic real-life driving situations, allowing you to translate theoretical knowledge into practical skills confidently. What sets our DMV practice test apart is the relaxed, pressure-free environment it offers. Practice here is an opportunity to learn at your own pace without the weight of the final DMV test looming over you. This Delaware CDL practice test is a stepping stone, regardless of whether you're aiming for a Class A or Class B license or planning to add endorsements. The range of subjects covered is extensive, from pre-trip vehicle inspection to gear shifting and speed control, including critical topics such as drug and alcohol awareness. Prepare to tackle hills, communicate effectively on the road, and handle your vehicle with assurance. Remember, the questions remain consistent through multiple attempts, enabling you to measure your improvement and solidify your knowledge. So, take a deep breath, relax, and let this Delaware CDL practice test be your guide to success in 2026.
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Sample Delaware CDL Test Questions - General Knowledge

Question 1

If fog becomes too dense to continue safely, where should you wait for visibility to improve?

  1. A In the travel lane with high beams on
  2. B On the highway shoulder with parking lights only
  3. C At a rest area, truck stop, or other safe parking location
  4. D Under an overpass

Correct answer: C – At a rest area, truck stop, or other safe parking location

Delaware’s CDL manual advises avoiding travel in fog when visibility is severely limited. Leave the roadway at a rest area, truck stop, or another safe parking location and wait for conditions to improve. If you must continue briefly, reduce speed and use low-beam headlights because high beams reflect from the fog and impair visibility.

Source: Delaware Commercial Driver’s Manual — § 2.12, “Driving in Fog”

Question 2

Which is the safest way to use mobile communication equipment in a CMV?

  1. A Text only while traveling below 35 mph
  2. B Use voice or single-touch controls, and stop safely off the highway before handling the phone
  3. C Hold the phone in your left hand to keep your right hand near the controls
  4. D Either A or B

Correct answer: B – Use voice or single-touch controls, and stop safely off the highway before handling the phone

Do not text or use a hand-held mobile telephone while driving a CMV. Voice-activated or single-touch operation avoids holding the phone, but pulling off the highway and stopping where the vehicle can safely remain stationary is the safer choice when a task requires handling the device. Traffic delays and red lights still count as driving under these rules.

Source: Delaware Commercial Driver’s Manual — § 2.9.4, “Use In-Vehicle Communication Equipment Cautiously”, 49 CFR § 392.80 – Prohibition against texting, 49 CFR § 392.82 – Using a hand-held mobile telephone

Question 3

Which items deserve extra attention during a winter vehicle inspection?

  1. A Coolant level and antifreeze protection
  2. B Heating and defrosting equipment
  3. C Windshield wipers and washers
  4. D All of the above

Correct answer: D – All of the above

The Delaware CDL manual directs drivers to check all three areas before operating in winter weather. Adequate coolant and antifreeze help protect the engine, while working heaters and defrosters are necessary for visibility. Wiper blades, washer equipment, and freeze-resistant washer fluid must also be ready to clear snow, ice, and road spray.

Source: Delaware Commercial Driver’s Manual — § 2.13.1, “Vehicle Checks”

Question 4

Which practice can help reduce stress while driving?

  1. A Drinking large amounts of coffee
  2. B Eating a heavy meal before departure
  3. C Listening to calm music and concentrating fully on driving
  4. D Making personal phone calls while underway

Correct answer: C – Listening to calm music and concentrating fully on driving

A calm environment and full attention to driving can help limit stress. The CDL manual recommends calm music, realistic travel planning, and accepting unavoidable delays. Phone conversations, eating, and similar activities create distractions rather than relieving driving stress safely.

Source: Delaware Commercial Driver’s Manual — § 2.10.2, “Don’t Be an Aggressive Driver”

Question 5

A yellow diamond sign showing a side lane joining the main lane warns of what condition?

This sign warns drivers to _____________.
  1. A An emergency-vehicle station
  2. B Traffic merging from another roadway
  3. C A four-way intersection
  4. D A required stop

Correct answer: B – Traffic merging from another roadway

In Delaware, a Merge sign warns that traffic streams from separate roadways converge ahead. Drivers on the main roadway should watch for vehicles entering near the merge point. The sign identifies a roadway condition; it is not a stop sign.

Source: Delaware Manual on Uniform Traffic Control Devices — § 2C.40, “Merge Signs (W4-1, W4-5)”

Question 6

Before beginning a long downgrade in a vehicle with an automatic transmission, what should you do?

  1. A Select an appropriate lower range
  2. B Shift into neutral
  3. C Wait until the vehicle enters a curve to downshift
  4. D Place the transmission in its highest range

Correct answer: A – Select an appropriate lower range

Select a suitable low range before descending the grade. A lower range provides greater engine braking and limits unwanted upshifts beyond the selected gear. Beginning the downgrade in the proper range reduces reliance on the service brakes and helps prevent excessive brake heating.

Source: Delaware Commercial Driver’s Manual — § 2.3.3, “Automatic Transmissions”

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