Hazard warning signals (4-way flashers) are intended to:

Hazard warning signals, commonly known as 4-way flashers, are specifically designed to alert other drivers that a vehicle is in a hazardous position. When activated, these signals notify other road users that the vehicle may be stationary, experiencing a problem, or in a situation that requires caution from surrounding vehicles. This function is crucial for enhancing safety on the road, allowing others to approach with care and possibly navigate around the hazard.

In situations such as a breakdown, an accident, or when a driver has to stop unexpectedly in a potentially dangerous area, hazard warning signals are a key tool for communication. They convey that something unusual is occurring that requires heightened awareness from other drivers.

The other options represent functions that are not appropriate for hazard warning signals. Indicating a lane change, signaling a stop, or relaying the speed of a vehicle are all specific actions that have their own corresponding signals or maneuvers that do not involve the use of 4-way flashers. Thus, the primary purpose of hazard warning signals is to communicate a hazardous situation to other drivers effectively.