What must a commercial driver do after being involved in an accident?

A commercial driver involved in an accident must stop, render aid, and exchange information with other parties. This is crucial for ensuring the safety of everyone involved and for complying with legal obligations. Stopping at the scene allows the driver to assess the situation, check for injuries, and provide assistance if needed.

Exchanging information, such as names, contact details, insurance information, and vehicle identification is vital for any subsequent claims or legal actions. This responsibility underscores the importance of accountability in commercial driving, where drivers are held to high standards due to the potential impact of their vehicle's size and weight in accidents.

The other choices do not adequately address the responsibilities of a commercial driver in an accident scenario. Driving away without addressing the situation can result in severe legal consequences and complicates issues related to insurance and liability. Calling the police only if the damage is significant could lead to delays in reporting and legal repercussions, while sitting in the vehicle until help arrives does not fulfill the duty to assist or exchange necessary information.