Question 1
Hauling liquids in tankers requires special care for two reasons. One reason is the _____ center of gravity that tankers have.
Correct Answer:
High
Question 2
You are driving a tank truck and the front wheels begin to skid. Which of these is most likely to occur?
Correct Answer:
You will continue in a straight line and keep moving forward no matter how much you steer
Question 3
How far back does a helper stand when pumping or unloading liquids from a tanker?
Correct Answer:
25 feet
Question 4
Outage means:
Correct Answer:
Allowance for expansion of liquid
Question 5
Side to side surge can cause:
Correct Answer:
Roll over
Question 1 of 20
Exam overview

About this Exam

Welcome to your essential first step toward a specialized and high-paying career in commercial transportation.

The Delaware CDL Tanker Endorsement (N) is a vital qualification for drivers who want to operate commercial vehicles specifically designed to haul liquid or gaseous materials in bulk.

This endorsement is required if you plan to drive a vehicle carrying tanks with an individual capacity greater than 119 gallons and an aggregate capacity of 1,000 gallons or more.

It is designed for ambitious professional drivers who understand that specialized skills unlock greater opportunities in logistics, fuel supply, and manufacturing.

More details

Additional Information

What the Course Entails and Exam Details

The material covers critical safety concepts unique to tanker operations that you will not find in the general CDL handbook sections.

Successfully obtaining the endorsement requires mastering several complex driving dynamics.

The core syllabus focus areas include:

  • Liquid Surge Management: Understanding how the movement of liquid inside a tank affects braking, accelerating, and turning is paramount for preventing rollovers and loss of control.

  • Weight Distribution and Stability: You will learn to manage the high center of gravity of a loaded tanker, especially when navigating curves and ramps.

  • Special Inspections: A comprehensive overview of how to perform specialized pre-trip, en-route, and post-trip inspections unique to the tank and its piping, valves, and manholes.

  • Safe Driving Practices: Techniques for maintaining safe following distances, managing speed under surge conditions, and handling "baffled" versus "un-baffled" tanks.

  • Emergency Protocols: Specific procedures for handling critical situations, including leaks, spills, and rollovers.


What to Expect in the Final Exam

The Delaware CDL Tanker Endorsement exam is a focused knowledge test administered by the Delaware Division of Motor Vehicles (DMV).

Here are the key details you must know:

  • Format: The exam consists of multiple-choice questions.

  • Question Count: You can expect to answer 20 questions.

  • Passing Score: A score of at least 80% is required. This means you must correctly answer at least 16 out of 20 questions.

  • Time Limit: While there is often no strict official time limit, applicants are typically expected to complete the test efficiently, usually within 30 to 45 minutes.

  • Rules: You must take the test in person at an authorized location; it is not an open-book exam, and no external aids are permitted.


How to Study and Exam Centers

The most effective strategy is to combine theoretical knowledge with consistent simulation.

  • Study the Official Manual: Begin by thoroughly reading the corresponding section in the Delaware CDL Manual, paying close attention to technical terms and safety procedures.

  • Take Targeted Practice Tests: Repeatedly taking our state-specific [Delaware CDL Tanker Practice Test] will familiarize you with the wording, format, and common question types, helping you build confidence and identify weak areas.

  • Review Explanations: Do not just check your answers; read the detailed explanations for every correct and incorrect answer to understand the reasoning.

When you are ready to take the official exam, you can do so at any full-service Delaware DMV testing center, which are located in:

  • Wilmington

  • Delaware City

  • Dover

  • Georgetown


Job Opportunities from the Course

Obtaining your Tanker Endorsement is a game-changer for your career and earning potential.

This single addition to your CDL unlocks a variety of specialized job paths in high-demand industries in Delaware and beyond.

Potential job titles and career paths include:

  • Fuel Delivery Driver (Gasoline, Diesel)

  • Chemical Tanker Driver (Hazardous and Non-Hazardous)

  • Cryogenic Liquid Transport Driver

  • Industrial Gas Hauler

  • Food-Grade Liquid Transport Driver (Milk, Juices, Syrups)

  • Water Hauler for Construction or Agriculture

  • Waste and Wastewater Transport Driver

This qualification sets you apart from general Class A or B drivers, making you a more valuable asset to premier carriers. Good luck with your studies, and we look forward to seeing you excel in your professional driving career!


Quiz information

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