Cruise Control
This first image is the Cruise Control Indicator light in text form. The light is illuminated when the cruise control is engaged. It is perfectly straightforward, as opposed to the many image symbols below that are now often used in its place.
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Note that some manufacturers use this light in yellow/amber when the system is on but not engaged. The indicator will also be yellow/amber if there is a system malfunction.
Alternatively, some manufacturers use the Text Symbol to the left, Cruise Main, to indicate that the cruise control system is turned on. Once a speed is set, it reverts to the Text Symbol to the right, Cruise Control.
Alternate Cruise Control Indicator symbols. This is a new symbol that sometimes replaces the simple Text Symbols that remain in use. Unfortunately, it is not immediately obvious to most what this symbol represents, until it is explained. Which itself may explain the combination symbol, also in use. Seen in black and white simply means a speed has not been chosen.
It is, of course a representation of a speedometer (the dial), with a pointer (arrow) indicating a speed. A second version in more advanced systems is even more confusing.
And last but not least, the Active Cruise Control Indicator symbol. This symbol adds a car to the speedometer and arrow in the previous symbol. Again, unfortunately it is not immediately clear to the average driver just what it is trying to say.
Variously called Radar Controlled or Adaptive, the systems operate the same way. It is not warning of an imminent collision, but rather showing that the cruise control system will maintain the speed needed to maintain the proper distance between your vehicle and the one ahead of you. Click this link for more.
These are a Set Indicator symbol and a Set Speed symbol. Some manufacturers use Set to indicate that a speed has been chosen. The second and third will include the chosen speed, while the first may be used to indicate a system problem. It will blink if that is the case.
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Remember that only proper service and repair procedures will ensure the safe and reliable operation of your car. In addition, proper safety procedures and precautions, such as the use of safety goggles, the right tools and the equipment should be followed at all times to eliminate the possibility of personal injury or improper service which could damage the vehicle or compromise its safety.
These posts are for information sharing purposes only, and should not be used in lieu of an OEM service manual or factory authorized service procedure. We are not in the auto repair business nor do we publish automotive service manuals. Nothing we include on these pages and posts has been reviewed, approved or authorized by any vehicle manufacturer.
Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow. And when it comes to the current state of flux in the auto industry, nothing is more true.
The author has 25 years of automotive experience and has assembled the most extensive collection of symbols and warning lights anywhere (over 1,000!) and can help you open and start any keyless start car with a dead key fob battery. BA, St. Joseph’s College, ME: MS, Rensselaer Polytechnic Institute, NY
These are Passive Speed Limit Indicator and Overspeed Indicator 
The symbols here are pictorial representations of essentially the same thing, using a speedometer image with an arrow or a sign alongside. If a set passive speed limit is exceeded, the driver is alerted by an acoustic signal. In addition, the symbol indicating the speed limit is turned to 
Similarly, several manufacturers use an Overspeed Warning Indicator. It has a single speed set into the system, which is 75 miles per hour, or 120 kilometers per hour (km/hr). It is a simple warning that illuminates if the speed is exceeded, with or without a greater than sign. A chime sounds for a few seconds as well.
This pair are seen in green. The first icon with the dial with an arrow and the letters LIM indicate that its Manual Speed Limiter is on and functioning. In this case, the indicator will flash if the speed is exceeded. The Assist indicator tells the driver that speed limits will be detected and can be set manually.
As usual, there is seemingly no limit to the number of variations these warnings will take. This version will be seen in black and white in the information screen in the instrument panel, again when a speed set by the driver is exceeded. It shows either the letters MPH in the center or KPH in Canada or Europe for miles or kilometers per hour.
The symbols to right are related.