Accident scenes can easily lead to additional car accidents.
Clear the lane.

Accident Scenes are Hazardous
In these situations, the most important thing you need to remember is that you have to slow down as soon as you see trouble. There are those drivers on the freeway who will try to maintain their freeway speed until they come right on to the accident. Even if these drivers are acting impatient with you, you have to obey the emergency personnel and the traffic directions given by police, not the whims of the drivers who feel resentful because they are obstructed.
Watch behind and alongside.
When traffic is backed up due to an accident, there is an increased risk that you’re going to have people crawl into your blind spot very quickly to try to get by you in another lane or that you’re going to have people come up on you so fast that they end up rear ending your vehicle. Use extra caution in these situations. Keep a sharp eye out for traffic coming up alongside you and be wary of cars coming up behind you too quickly. One mistake could lead to a chain-reaction car crash.
If somebody injures you or damages your vehicle – or both – because they failed to obey emergency personnel and to reduce their speed or change their direction of travel to avoid the site of a collision, consider contacting a car accident lawyer. Taking such actions and causing you to come to harm may well constitute negligence and you may be entitled to compensation from a jury award or settlement because of that.