KDOT Winter Maintenance & Operations 4 — Questions and Answers
Question 1: What should a KDOT inspector verify when conducting a winter maintenance equipment pre-trip inspection?
- Only tire pressure and fuel level
- Plow hydraulics, spreader calibration, lights, and fluid levels (Correct answer)
- Engine oil only
- Cab temperature and radio function
Correct answer: Plow hydraulics, spreader calibration, lights, and fluid levels
A thorough pre-trip inspection covers plow hydraulic function, spreader calibration, all lighting, fluid levels, and safety equipment to ensure reliable winter operations.
Question 2: How does KDOT's Maintenance Management System (MMS) support winter operations?
- It automatically operates plow trucks remotely
- It tracks material usage, labor hours, and equipment activity for cost accounting (Correct answer)
- It predicts weather forecasts
- It controls traffic signals during storms
Correct answer: It tracks material usage, labor hours, and equipment activity for cost accounting
MMS records labor, equipment, and material data to track winter maintenance costs and support performance reporting and budget management.
Question 3: What is the significance of pavement temperature versus air temperature in winter maintenance decisions?
- Air temperature always determines ice formation
- Pavement temperature is the critical factor because it determines whether ice will form (Correct answer)
- Both temperatures are equally important
- Only humidity matters for ice formation
Correct answer: Pavement temperature is the critical factor because it determines whether ice will form
Pavement surface temperature determines ice formation potential; air temperature can be above freezing while the pavement remains at or below 32°F.
Question 4: Which type of storm requires the most aggressive KDOT winter maintenance response?
- A light snow event under 2 inches
- A freezing rain event with ice accumulation on pavement (Correct answer)
- A snowfall above 34°F pavement temperature
- A forecast that does not materialize
Correct answer: A freezing rain event with ice accumulation on pavement
Freezing rain creates a bond between ice and pavement that is extremely difficult to remove and can paralyze traffic rapidly, requiring aggressive pre-treatment and response.
Question 5: What is 'material carryover' in the context of de-icing applications?
- Unused material moved to the next season's inventory
- Residual chemical remaining on pavement from a previous application that continues to work (Correct answer)
- Sand transported by traffic to adjacent lanes
- Chemical transferred from one truck to another
Correct answer: Residual chemical remaining on pavement from a previous application that continues to work
Material carryover refers to residual de-icing chemical left on the road that remains active and can reduce the need for additional applications.
Question 6: Why should de-icing materials NOT be applied on top of compacted snow that has turned to ice?
- It increases the risk of fire
- Chemicals cannot penetrate thick ice layers effectively without mechanical breaking (Correct answer)
- It causes the ice to expand
- It damages the chemical spreader
Correct answer: Chemicals cannot penetrate thick ice layers effectively without mechanical breaking
Chemicals work best at the pavement-ice interface; thick compacted ice prevents chemical penetration, making mechanical plowing necessary first.
Question 7: What PPE is required for KDOT workers when handling bulk liquid de-icing chemicals?
- No PPE required for diluted solutions
- Safety glasses, chemical-resistant gloves, and appropriate clothing (Correct answer)
- Hard hat only
- Hearing protection and safety vest only
Correct answer: Safety glasses, chemical-resistant gloves, and appropriate clothing
Liquid de-icing chemicals can irritate eyes and skin, so safety glasses, chemical-resistant gloves, and protective clothing are required during handling.
KDOT Winter Maintenance & Operations 4
What should a KDOT inspector verify when conducting a winter maintenance equipment pre-trip inspection?