Final answer:
The correct answer is c. Secondary crashes. These refer to collisions that occur within the accident scene or within the "Q" or backup, including those in the opposite direction resulting from the original incident.
Step-by-step explanation:
The correct answer is c. Secondary crashes. Secondary crashes refer to collisions that occur within the accident scene or within the "Q" or backup, including those in the opposite direction resulting from the original incident. These crashes are considered secondary because they are a direct result of the primary or initial crash.
For example, in a multi-car collision on a highway, if additional crashes occur after the initial collision due to decreased visibility or driver confusion, those would be classified as secondary crashes.
Understanding secondary crashes is crucial for traffic safety and accident prevention. Identifying the factors that contribute to secondary crashes can help authorities implement strategies to mitigate the risk and improve overall road safety.