Safety & Compliance > CDL "Cargo Tank" Practice Test Back to CDL Practice Tests Main Page 1. What is a tank vehicle? a. A vehicle that is loaded through vent holes in the roof b. A vehicle that carries dry bulk products in a tank that holds 1000 gallons or more c. A vehicle rated over 26,000 pounds, designed to carry gaseous or liquid material within a tank d. A vehicle that carries flammable products in a quantity requiring placarding 2. Why does driving a tank vehicle require special skills? a. Tank vehicles are easy to roll over b. Tank vehicles are larger than most combination vehicles c. Tank vehicles carry flammable materials d. Tank vehicles do not require special skills 3. The most important item to check on tank vehicles is: a. The pressure test dates b. Check for leaks c. The dome lid specifications d. Proper placards 4. Why should you be more careful when transporting dry bulk? a. There is an increased danger of fire b. The surge of dry bulk products is worse than with liquids c. The center of gravity is higher than most other commodities d. The product is usually a hazardous material 5. When should you be especially careful to avoid rollovers? a. When stopping quickly b. When first starting out c. On snow and ice d. When negotiating a turn 6. Cargo tank vehicles may have the following special equipment: a. Vapor recovery kits b. Grounding and bonding cables c. Built in fire extinguishers d. All of the above 7. Tests have shown: a. Tank vehicles can roll over at the posted speed limits for curves b. Tank vehicles can safely negotiate curves at the posted speed limit only when loaded c. Tank vehicles can roll over at below the posted speed limit for curves only when loaded d. Tank vehicles can safely negotiate curves at the posted speed limit only when empty 8. What is surge? a. The expansion of liquid product due to a rise in temperature b. The movement of liquid within the tank c. The electrical charge that occurs during the loading process d. The pulsing of a liquid product when being unloaded with a high pressure pump 9. Why is surge dangerous? a. The product continues to move in the tank, causing vehicle to move even if the brakes are on b. The product can foam up and expand too rapidly, causing a spill c. The product can spill out of the dome lid cover d. An electrical fire could occur 10. What is used to reduce surge? a. Baffles b. Anti-surge chemicals c. Grounding the trailer during the loading process d. Loading product during cooler temperatures 11. What should you be careful of when loading a tank vehicle with bulkheads? a. There is no risk b. Weight distribution c. You must have a bulkhead distribution permit d. Fumes 12. What is a baffle? a. A bulkhead b. A tough question c. A bulkhead with holes in it d. An air vent in the cargo tank 13. What type of surge does a baffle have no effect on? a. Vertical surge b. Side to side surge c. A class B surge d. Horizontal surge 14. Why can't baffles be used in tank vehicles that transport food products? a. Sanitation requirements b. The bacteria can damage the baffle vents c. Food products don't surge d. Baffles can be used if they are not electrically charged 15. What is outage? a. A shortage of product delivered compared to product ordered b. A spill at the time of loading a liquid product c. The shrinkage a product experiences due to a drop in temperature d. The expansion of a product due to an increase in temperature 16. Why do you have to be concerned about outage? a. A spill could occur because of the expansion b. A rollover accident is easier to happen because of the high center of gravity c. The product is damaged if outage exceeds 4% d. Outage causes electrical shortages in the trailer pump 17. Why do you have to be concerned about dense products? a. They are more difficult to unload b. They are heavier per gallon and you may exceed the weight limit c. They can leak more easily d. They may be dangerous to breathe 18. The amount of liquid to load into a tank depends on: a. The amount the liquid will expand in transit b. The weight of the liquid c. The legal weight limits d. All of the above 19. Why are smooth bore tanks more difficult to drive than others? a. They are un-baffled, allowing the product to surge b. They may contain contaminated products c. They may leak, contaminating the brake lining of the trailer d. Smooth bore tanks are no different than baffled tanks 20. Are you required to have a tank endorsement on your CDL if you transport a portable tank on a flatbed? a. Yes, in all cases b. Yes, if the tank has a capacity of 500 gallons or more c. Yes, if the tank has a capacity of 1000 gallons or more d. No, regardless of the size of the tank 21. Tank vehicles may be equipped with the following special purpose equipment: a. Vapor recovery kits b. Grounding and bonding cables c. Emergency shutoff systems d. All the above 22. If you must makea quick stop to avoid a crash: a. Use controlled or stab braking b. Use the trolley valve c. Activate the tractor protection valve d. Honk your horn to warn other motorists 23. In addition to inspecting for leaks, a tank vehicle should be inspected for the following: a. Turret properly lubricated b. Manhole covers have gaskets and they close correctly c. Cutoff valve in correct position d. "b" and "c" are correct     Oregon Trucking Associations, Inc. 4005 SE Naef Rd. | Portland, OR 97267 503.513.0005 | 503.513.0008 (fax) | 888-293-0005 | ortruck@ortrucking.org © 2004 Oregon Trucking Associations Inc.