CSX CONDUCTOR TRAINING
STUDENT WORKBOOK PART 3:
HAZARDOUS MATERIAL 2026
QUESTIONS AND ANSWERS| ACE
YOUR GRADES.
What is a Key Train? - correct answer -1. Has 1 or more loads of
spent nuclear fuel or high level radioactive waste.
2. Has 1 or more loaded tank cars containing materials labeled
POISON/TOXIC-INHALATION HAZARD.
3. Has 20 or more loaded Haz Mat shipments having a
combination of materials that require the phrase POISON-TOXIC
INHALATION HAZARD.
The maximum authorized speed for key trains is? - correct
answer -50 mph
When first defect in a key train is reported, train must not exceed -
correct answer -30 mph until it passes over the next wayside
detector
, Page | 2
If second defect in a train is failed, car must be - correct answer -
Set out from the train
What is an Alert Car? - correct answer -1. Rail car containing
more then 5,000 lbs of explosive material.
2. Tank car contain Poison Inhalation Hazard.
3. Rail car containing a highway-route controlled quantity of class
7 (radioactive) material.
What is Positive Control? - correct answer -Authorized
representative attending the rail car by being physically on the site
and capable of promptly responding to any unauthorized access
near the rail car.
What is a Buffer Car? - correct answer -1. Non-placarded rail car.
2. Railcar with a placard or marking shown in Group F on
Switching Chart.
3. Railcar with a placard or marking shown in Group E on the
Position-In-Train Chart.
4. Residue/Empty tank with no other restrictions.
5. Placarded rail car with no other restrictions.