Final answer:
Rear-end collisions account for a significant proportion of accidents in work zones, but the exact percentage can vary.
Step-by-step explanation:
The question is asking for the percentage of rear-end collisions that account for accidents within a work zone. Unfortunately, the information provided does not directly answer this question. We need data specifically related to rear-end collisions within work zones. However, I can provide some general information about rear-end collisions in work zones that might be helpful.
Rear-end collisions are a common type of accident within work zones. In fact, they account for a significant proportion of accidents in work zones. The exact percentage may vary depending on various factors like location, time, and driving conditions. It's important for drivers to be alert and maintain a safe distance from the vehicle in front to minimize the risk of rear-end collisions in work zones.