South Dakota CDL School Bus Practice Test (SD) 2026

5 out of 5 (38 votes)
80% Passing score
20 Questions
4 Mistakes allowed
As drivers ed instructors with decades of experience, we understand the importance of thorough preparation when it comes to obtaining your commercial driver's license with a school bus endorsement. Our South Dakota CDL school bus practice test is crafted to give you a comprehensive overview of what you need to know. From safety procedures and pre-trip inspections to basic control skills and on-road driving, our test covers all the critical areas. Each South Dakota school bus endorsement test consists of 20 multiple-choice questions, and you'll need to get at least 16 correct answers to pass. This ensures that you're well-equipped and confident to take on the actual permit test. One distinctive aspect of our school buses is their high visibility, painted in National School Bus Glossy Yellow, making them easily recognizable and unique. This is just one of the many key safety features covered in our practice permit test. In the realm of DMV practice tests, you might come across various resources that promise shortcuts or so-called 'DMV test cheat sheets.' However, these materials often come with questionable legality and authenticity, posing a risky and potentially costly approach. Instead, our SD DMV driving test practice is a reliable and lawful study tool. We prioritize providing you with verified and effective preparation resources. Furthermore, our school bus practice test is completely free. Despite being cost-free, it offers as many features and study opportunities as any paid counterpart. This ensures that you get a high-quality preparation experience without spending a dime. Another advantage of our South Dakota DMV practice test is that it is not timed. This allows you to spend as much time as you need on each question, ensuring thorough understanding and preparation. Take your time to work through every aspect, building your knowledge and confidence at your own pace. By choosing our school bus endorsement practice test, you are opting for a trusted, comprehensive, and cost-effective tool to prepare for your South Dakota school bus endorsement test.
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Sample South Dakota School Bus Test Questions

Question 1

Which item is not listed as part of a school bus post-trip inspection?

  1. A Property left aboard the bus
  2. B Students who may have fallen asleep
  3. C The bus’s exterior paint color
  4. D Windows or doors left open

Correct answer: C – The bus’s exterior paint color

The South Dakota CDL manual directs the driver to walk through and around the bus after a route or activity trip. The driver should look for articles left aboard, sleeping students, open windows or doors, mechanical problems, damage, and vandalism. Checking the exterior paint color is not included in that post-trip procedure.

Source: South Dakota Commercial Driver’s License Manual — § 10.2.6, “Post-trip Inspection”

Question 2

Once a motorist is legally required to stop for a school bus’s flashing red lights, must the motorist remain stopped until those lights are extinguished?

  1. A TRUE
  2. B FALSE

Correct answer: A – TRUE

South Dakota law requires a motorist who must stop for flashing red school bus lights to remain stopped until the lights are extinguished. The law includes an exception for an approaching vehicle traveling in the opposite direction on a highway with at least two travel lanes in each direction. The question applies only when a stop is legally required.

Source: SDCL § 32-32-6 – Amber or red signal--Motorist duty to slow or stop--Exception--Penalty

Question 3

When students must cross in front of a school bus, they should reach a point at least how many feet in front of its right bumper corner?

  1. A 6 feet
  2. B 8 feet
  3. C 10 feet
  4. D 12 feet

Correct answer: C – 10 feet

The South Dakota CDL manual instructs students crossing the roadway to move approximately 10 feet from the side of the bus and then to a point at least 10 feet in front of the right corner of the bumper. They should remain away from the bus and wait for the driver’s signal before crossing.

Source: South Dakota Commercial Driver’s License Manual — § 10.2.3, “Additional Procedures for Students That Must Cross the Roadway”

Question 4

When should students begin boarding a school bus?

  1. A As soon as the service door starts opening
  2. B When the driver signals them to board
  3. C Whenever the students believe traffic has stopped
  4. D As soon as the stop arm extends

Correct answer: B – When the driver signals them to board

Students should remain at the designated waiting location until the driver signals them to board. An open door or extended stop arm does not by itself replace the driver’s signal. Once signaled, students should board slowly, in single file, and use the handrail.

Source: South Dakota Commercial Driver’s License Manual — § 10.2.2, “Loading Procedures”

Question 5

What is the primary reason for inspecting a school bus?

  1. A To provide additional work for maintenance employees
  2. B To complete a school administrator’s records
  3. C To protect safety by finding defects that could cause a crash or breakdown
  4. D To create a scheduled break between routes

Correct answer: C – To protect safety by finding defects that could cause a crash or breakdown

Safety is the most important reason for inspecting any commercial vehicle. An inspection can reveal defects before they contribute to a crash or leave the bus disabled on the road. Problems affecting safe operation should be reported and corrected before the vehicle is placed in service.

Source: South Dakota Commercial Driver’s License Manual — § 2.1.1, “Why Inspect”

Question 6

In South Dakota, the CDL passenger and school bus endorsements are required for a school bus designed to transport how many people?

  1. A 6 or more, including the driver
  2. B 9 or more, including the driver
  3. C 16 or more, including the driver
  4. D 22 or more, excluding the driver

Correct answer: C – 16 or more, including the driver

A vehicle designed to transport 16 or more people, including the driver, meets the applicable commercial passenger-vehicle threshold. A driver operating a qualifying school bus needs the passenger endorsement and the school bus endorsement. Federal endorsement standards require a school bus endorsement applicant to first qualify for the passenger endorsement.

Source: SDCL § 32-12A-1(5)(c), (30) – Definitions, 49 CFR § 383.93(b)(2), (5), (c)(2), (5) – Endorsements, 49 CFR § 383.123(a)(1) – Requirements for a school bus endorsement

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