Colorado POST Practice Exam

What does smear bituminous refer to in roadway conditions?

1. Excess of asphalt or tar from tire wear

2. Debris from vehicles on the road

3. A sudden drop in temperature causing road slickness

4. Oil spills from construction projects

The correct answer is: Excess of asphalt or tar from tire wear

Smear bituminous refers specifically to the presence of excess asphalt or tar on the roadway surface. This can occur due to the wear and tear from vehicle tires, which can displace and redistribute the asphalt or tar that is part of the road surface. When this excess bituminous material accumulates, it can create slick spots that pose a hazard to vehicles, particularly in adverse weather conditions. Recognizing this condition is crucial for road maintenance and safety, as it can lead to reduced traction for drivers and increased risk of accidents, particularly during wet weather when the slickness of the surface can be exacerbated. The other options do not capture this specific phenomenon associated with roadway conditions. Debris from vehicles pertains to physical litter or materials left on the road but does not specifically relate to the bituminous smear. A sudden drop in temperature causing road slickness typically refers to ice formation rather than asphalt displacement. Oil spills from construction projects may lead to slick roads but are distinct from the smearing of bituminous material caused primarily by tire wear on existing asphalt surfaces.