What action should be taken if a driver must stop on a freeway?

When a driver must stop on a freeway, the appropriate action is to turn on the hazard lights and stay in the vehicle. This is essential for safety because turning on hazard lights alerts other drivers that your vehicle is stationary and possibly in a dangerous situation. It indicates that there is something unusual about your vehicle's presence on the road, which helps prevent accidents by making your vehicle more visible to other drivers approaching at high speeds.

Staying inside the vehicle is advisable because it offers protection from passing traffic, which can be particularly hazardous on high-speed roadways like freeways. Exiting the vehicle increases the risk of accidents, as vehicles traveling at speed might not see a person standing outside until it is too late.

Calling emergency services can be important, but first ensuring that your vehicle is visible and that you are safe inside can make a significant difference in securing your wellbeing on the freeway. Continuous signaling with the horn is typically not appropriate and may confuse other drivers, as it is not a standard method of indicating an emergency or unusual situation.