CPWM Collection and Transportation Logistics 4 — Questions and Answers
Question 1: What is the purpose of a 'dead-end street' collection protocol in route design?
- To skip non-accessible streets
- To define specific turn-around procedures minimizing backup maneuvers on blind-end roads (Correct answer)
- To designate hazardous material collection zones
- To schedule dead-end streets for last pick-up of the day
Correct answer: To define specific turn-around procedures minimizing backup maneuvers on blind-end roads
Dead-end street protocols specify how drivers should approach and turn around on cul-de-sacs or dead-ends to minimize backing, which reduces accident risk and collection time.
Question 2: Which type of waste container is typically used for large-scale commercial and construction waste collection?
- Poly cart
- Roll-off open-top container (Correct answer)
- Rear-load dumpster
- Gaylord box
Correct answer: Roll-off open-top container
Roll-off containers are large, open-top metal boxes transported by hook-lift or cable-hoist trucks, ideal for bulk debris from commercial or construction sites.
Question 3: A waste collection manager notices fuel costs increasing despite stable route miles. Which factor should be investigated first?
- Changes in residential population density
- Idle time and engine warm-up habits of drivers (Correct answer)
- Seasonal variation in waste generation
- The type of waste being collected
Correct answer: Idle time and engine warm-up habits of drivers
Excessive idling is a primary cause of unexpected fuel cost increases since collection vehicles often idle during loading — monitoring and limiting idle time can significantly reduce consumption.
Question 4: What is 'set-out rate' in residential waste collection performance metrics?
- The speed at which drivers set up routes each morning
- The percentage of households that place waste containers at the curb on collection day (Correct answer)
- The rate of container replacement due to damage
- The frequency of missed collection complaints
Correct answer: The percentage of households that place waste containers at the curb on collection day
Set-out rate measures participation by tracking what percentage of eligible households actually present waste for collection on their scheduled day.
Question 5: Under EPA regulations, which category of waste requires a manifest document to accompany each shipment during transport?
- Municipal solid waste
- Construction and demolition debris
- Hazardous waste (Correct answer)
- Yard waste
Correct answer: Hazardous waste
EPA's 40 CFR Part 262 requires a Uniform Hazardous Waste Manifest to accompany all hazardous waste shipments from generation through final disposal under the cradle-to-grave tracking system.
Question 6: What is the main benefit of implementing 'dynamic routing' software in waste collection operations?
- It automatically dispatches emergency vehicles to accidents
- It adjusts routes in real time based on traffic, missed stops, and service requests (Correct answer)
- It schedules preventive maintenance for the fleet
- It tracks driver hours for payroll purposes
Correct answer: It adjusts routes in real time based on traffic, missed stops, and service requests
Dynamic routing software uses real-time data to optimize routes on the fly, reducing total miles driven and improving on-time service completion.
Question 7: A municipality switching from twice-weekly to once-weekly collection would most likely require:
- Smaller collection vehicles
- Larger containers for residents and increased truck payload capacity (Correct answer)
- More transfer stations
- Elimination of recycling programs
Correct answer: Larger containers for residents and increased truck payload capacity
Reducing collection frequency means more waste accumulates between pickups, requiring residents to have larger containers and trucks capable of handling heavier loads per stop.
CPWM Collection and Transportation Logistics 4
What is the purpose of a 'dead-end street' collection protocol in route design?