CPWM Collection and Transportation Logistics 5 — Questions and Answers
Question 1: What is the primary safety risk associated with side-loading collection vehicles operating in traffic?
- Rollover due to uneven load distribution
- Crew members working on the traffic side of the vehicle (Correct answer)
- Compactor blade hydraulic failure
- Overloading causing brake failure
Correct answer: Crew members working on the traffic side of the vehicle
When crews work on the traffic side of a side-loader, they are exposed to passing vehicles, making it one of the leading causes of waste worker fatalities.
Question 2: Which performance indicator best measures the cost efficiency of a waste collection operation?
- Total fleet mileage per year
- Cost per ton collected (Correct answer)
- Number of vehicles in the fleet
- Average driver seniority
Correct answer: Cost per ton collected
Cost per ton collected normalizes operational expenses against productivity, enabling fair comparison between routes, crews, and service types.
Question 3: In a dual-stream recycling collection system, materials are separated into which two categories at the curb?
- Wet and dry waste
- Fiber (paper/cardboard) and containers (glass/metal/plastic) (Correct answer)
- Organic and inorganic materials
- Hazardous and non-hazardous recyclables
Correct answer: Fiber (paper/cardboard) and containers (glass/metal/plastic)
Dual-stream recycling separates paper and cardboard from containers at the source to reduce contamination and improve material quality at the MRF.
Question 4: What is the function of a 'packer blade' in a rear-load collection vehicle?
- Cuts large items to fit through the hopper
- Sweeps and compresses waste from the hopper into the body (Correct answer)
- Seals the tailgate during transport
- Ejects waste at the disposal facility
Correct answer: Sweeps and compresses waste from the hopper into the body
The packer blade is a hydraulic ram that moves waste from the loading hopper into the truck body and compresses it, increasing the payload per trip.
Question 5: A waste hauler operating across state lines must comply with which federal agency's regulations for vehicle safety?
- EPA
- OSHA
- FMCSA (Federal Motor Carrier Safety Administration) (Correct answer)
- DOE
Correct answer: FMCSA (Federal Motor Carrier Safety Administration)
FMCSA, under the Department of Transportation, regulates interstate commercial motor vehicle safety including driver qualifications, hours of service, and vehicle inspections.
Question 6: What is 'bulky waste' collection, and how does it typically differ from regular curbside pickup?
- Collection of industrial drums, scheduled daily with standard trucks
- Collection of large household items like furniture, typically scheduled separately or on special collection days (Correct answer)
- Commercial waste over 1 ton, requiring permits
- Oversized recyclables collected at drop-off sites only
Correct answer: Collection of large household items like furniture, typically scheduled separately or on special collection days
Bulky waste includes large items like furniture and appliances that don't fit in standard carts, usually collected on separate days or by appointment with specialized vehicles.
Question 7: Which approach is used to calculate the number of collection vehicles needed for a given service area?
- Divide total population by vehicle capacity
- Estimate stops per day per vehicle, then divide total stops by stops per vehicle per day (Correct answer)
- Multiply route miles by average speed
- Use total tons generated divided by national average fleet size
Correct answer: Estimate stops per day per vehicle, then divide total stops by stops per vehicle per day
Fleet sizing uses the total number of service stops divided by the estimated stops a single vehicle can complete per day, accounting for load capacity and travel time.
CPWM Collection and Transportation Logistics 5
What is the primary safety risk associated with side-loading collection vehicles operating in traffic?