The phrase "automatic warning systems" is correct and usable in written English.
It can be used in contexts related to safety, technology, or alert mechanisms that operate without human intervention.
Example: "The automatic warning systems in the factory are designed to alert workers of any hazardous conditions immediately."
Alternatives: "automated alert systems" or "self-activating warning systems".
Truck drivers drove down the street backward so that they could test their automatic warning systems.
Your spacecraft and spacesuit have automatic warning systems, fail-safes and redundancies, and the calm voice of Houston can be heard from down below, walking you through any glitches that emerge.
Problems in aircraft technical performance are often raised through automatic warning systems, and periods of activity tend to be discrete (for example, a 12-hour flight).
The train's automatic warning system was working, the inspectors found.
In response Waze introduced an automatic warning system for Rio users when they choose a route through high-crime areas.
Railtrack chief executive Gerald Corbett dismissed a report from the Health and Safety Executive in April that a misaligned piece of track could have shaken the Thames train so violently it caused the automatic warning system to malfunction.
He is going to demonstrate with the automatic warning system equipment that if you hit the receiver hard at the right moment it sounds a bell not a horn.
It eventually found a solution: A radio-based automatic warning system.
The Metro drivers do not have the benefit of automatic warning system (AWS) or train protection and warning system (TPWS) available to the mainline train drivers on the same route.
Toyota Motor Company teamed up with Fujitsu Ten to develop an automatic warning system for hybrids and electric vehicles to alert pedestrians when the car is propelled by its electric motor.
requested that an automatic warning system should be established at the level crossing of the Canadian National Railway and Highway 7. At this same time, the rural municipality requested that the hills be gravelled which are situated on either side of Flaxcombe.
