KDOT Winter Maintenance & Operations 2

Question 1

What is the primary purpose of anti-icing in winter road maintenance?

Accepted Answer

Apply chemicals before a storm to prevent bond formation

Answer

Anti-icing applies liquid chemicals before precipitation to prevent ice from bonding to the pavement surface.

Question 2

At what pavement surface temperature does rock salt (NaCl) lose significant effectiveness?

Accepted Answer

15°F (-9°C)

Answer

Rock salt becomes significantly less effective below approximately 15°F (-9°C) and should be supplemented or replaced with other products.

Question 3

Which de-icing chemical is most appropriate when pavement temperatures drop below 15°F (-9°C)?

Accepted Answer

Calcium chloride (CaCl2)

Answer

Calcium chloride generates heat as it dissolves and remains effective down to approximately -25°F (-32°C), making it suitable for very cold conditions.

Question 4

What is the recommended maximum application rate for liquid anti-icing materials on Kansas highways in most conditions?

Accepted Answer

20-30 gallons per lane mile

Answer

KDOT guidelines generally recommend 20-30 gallons per lane mile for liquid anti-icing applications to balance effectiveness and cost.

Question 5

During a winter storm, what does 'Level of Service B' typically mean for KDOT operations?

Accepted Answer

Bare pavement within 4 hours of storm end

Answer

Level of Service B targets bare pavement conditions within 4 hours after a storm ends on designated route classifications.

(KDOT) Certified Kansas Department of Transportation Inspector Practice Test

(KDOT) Certified Kansas Department of Transportation Inspector Practice Test

KDOT Winter Maintenance & Operations 2