CPWM Collection and Transportation Logistics 2 — Questions and Answers
Question 1: What does 'payload capacity' refer to in waste collection vehicle specifications?
- The maximum weight of waste the vehicle can legally carry (Correct answer)
- The volume of the hopper before compaction
- The engine horsepower rating
- The number of stops per route
Correct answer: The maximum weight of waste the vehicle can legally carry
Payload capacity is the maximum allowable weight of cargo (waste) a vehicle can carry without exceeding its Gross Vehicle Weight Rating (GVWR).
Question 2: Which routing strategy minimizes left-hand turns to reduce fuel consumption and collection time?
- Spiral routing
- UPS-style right-turn optimization (Correct answer)
- Grid routing
- Reverse route scheduling
Correct answer: UPS-style right-turn optimization
UPS-style right-turn optimization reduces idling at intersections and improves fuel efficiency by minimizing left turns that require crossing traffic.
Question 3: A residential curbside collection truck must not exceed what federal bridge formula weight limit on a standard two-axle configuration?
- 34,000 lbs
- 80,000 lbs (Correct answer)
- 40,000 lbs
- 26,001 lbs
Correct answer: 80,000 lbs
Federal law limits most multi-axle trucks to 80,000 lbs gross vehicle weight on interstate highways under the Bridge Formula.
Question 4: What is the primary purpose of a transfer station in a waste collection system?
- To sort recyclables from mixed waste
- To consolidate waste from collection vehicles before long-haul transport (Correct answer)
- To store hazardous materials awaiting disposal
- To compost organic waste on-site
Correct answer: To consolidate waste from collection vehicles before long-haul transport
Transfer stations consolidate smaller collection vehicle loads into larger transfer trailers to reduce per-ton transportation costs to distant disposal facilities.
Question 5: Which type of collection service requires residents to place waste at the property line rather than the curb?
- Alley collection
- Backyard collection (Correct answer)
- Curbside collection
- Drop-off collection
Correct answer: Backyard collection
Backyard collection requires crews to enter private property to retrieve containers, resulting in higher labor costs than curbside service.
Question 6: In automated side-loader (ASL) operations, what sensor system ensures safe cart engagement?
- Infrared proximity sensors on the lift arm (Correct answer)
- GPS tracking system
- Onboard scale load cells
- Backup camera only
Correct answer: Infrared proximity sensors on the lift arm
ASL vehicles use infrared proximity sensors to detect cart position and ensure the arm aligns properly before lifting to prevent spills or equipment damage.
Question 7: What is 'managed competition' in the context of waste collection procurement?
- A bidding war between multiple haulers for the same contract
- A process where public employees compete against private firms for service contracts (Correct answer)
- Competitive pricing between different waste stream types
- A regulatory process for setting disposal fees
Correct answer: A process where public employees compete against private firms for service contracts
Managed competition allows in-house municipal crews to bid against private contractors, often improving efficiency and cost-effectiveness regardless of who wins.
CPWM Collection and Transportation Logistics 2
What does 'payload capacity' refer to in waste collection vehicle specifications?