Communicating: Mississippi CDL practice questions
Part of the General Knowledge test. We have 8 checked questions on this topic. Here are the key rules, and two to try.
Key facts
| Part of | the General Knowledge test (80% to pass) | 49 CFR 383.135 |
|---|---|---|
| Manual section | §2.5 Communicating | MS CDL Manual p. 2-12 |
| Questions in CDL Mile's bank | 8 | CDL Mile, checked against MS CDL Manual |
Key rules
- § 2.5.2p. 2-12
On a one-way or divided highway, set the warning devices at 10 feet, 100 feet, and 200 feet from your vehicle, toward the traffic that is coming at it.
Communicating Your Presence
- § 2.5.2p. 2-13
If a hill, curve, or other obstruction keeps drivers from seeing your vehicle within 500 feet, move the rear-most triangle back down the road beyond it so it gives warning.
Communicating Your Presence
Try two questions
General Knowledge · Communicating
As you walk back to set out reflective triangles, why should you hold them between yourself and oncoming traffic?
Tap an answer to see the explanation and the manual page.
General Knowledge · Communicating
You have to stop on the shoulder of a highway. How soon must your emergency warning devices be put out?
Tap an answer to see the explanation and the manual page.
More General Knowledge topics
Sources
Mississippi Commercial Driver's License Manual, version March 2025, Mississippi Department of Public Safety. Page references are to its printed page numbers. CDL Mile is independent and not affiliated with Mississippi DPS.
Updated for the March 2025 Mississippi CDL manual. Last checked November 5, 2026.
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