FMCSA TTheory Only
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Doubles/Triples (T) Endorsement

FMCSA-compliant Doubles/Triples (T) Endorsement theory training per 49 CFR Part 380. Fully bilingual EN/ES.

5 hrs of theory10 lessons80% to passFMCSA 49 CFR Part 380
$29.99
1-year access
  • FMCSA certificate included
  • Self-paced learning
  • Auto TPR reporting
  • English & Spanish

Course Curriculum

Doubles & Triples Overview & Inspection

3 lessons

T1.1
1. Types of Combination Vehicles: Double & Triple Trailers
30 min
2. Coupling & Uncoupling Double and Triple Trailers
30 min
3. Inspection of Combination Vehicles
30 min

Handling Combination Vehicles

4 lessons

T1.1
1. Rearward Amplification: The Crack-the-Whip Effect
30 min
2. Braking Distance Differences with Multiple Trailers
30 min
3. Turning Radius & Off-Tracking with Doubles/Triples
30 min
4. Stability & Rollover Prevention
30 min

Safe Operations

3 lessons

T1.3
1. Backing Doubles & Triples: Techniques & Limitations
30 min
2. Speed Management & Following Distance
30 min
3. Emergency Procedures for Combination Vehicles
30 min