In hot weather, spots on the pavement where tar is bleeding:
Answers
Are very slippery.
Offer the same amount of traction as the rest of the roadway.
Offer more traction than the rest of the roadway.
The Correct Answer and Explanation is :
The correct answer is: Are very slippery.
Explanation:
When hot weather causes tar to “bleed” from the pavement, it means that the heat is causing the tar (which is a sticky substance used in road construction) to soften and become more fluid. This process occurs because tar is a thermoplastic material, meaning its properties change with temperature. When it heats up, it loses its rigidity and becomes tacky or even liquid-like, which can be especially pronounced on sunny, hot days.
As the tar oozes out of the asphalt, it creates spots on the road that are significantly more slippery than the surrounding areas. This is because the tar reduces friction between the tire and the pavement. Friction is essential for providing traction, which helps vehicles maintain control, especially during braking, turning, or acceleration. When the tar is present, it forms a slick layer that can easily cause tires to lose grip, resulting in an increased risk of slipping, sliding, or losing control of the vehicle.
The slipperiness of tar-bleeding spots can be more dangerous than other areas of the road because drivers might not immediately notice these patches, especially when they are not marked or recognized as hazardous. This unexpected lack of traction can lead to accidents, especially in emergency maneuvers or during high-speed driving.
In contrast, areas of the road without tar bleeding offer more consistent traction, as the surface is generally designed to maintain grip under various weather conditions. Asphalt, once it has cooled and solidified, provides a rough texture that helps tires grip, especially in cooler temperatures.
Therefore, it’s crucial for drivers to be cautious on hot days, especially on roads that show signs of tar bleeding, as these areas can greatly increase the risk of slipping or losing control of the vehicle.