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It was a pleasure to be part of the 2007 ALERT International conference in Charlotte, NC. At the conference, we had a drawing for a free 120 volt CAEC (Collision Avoidance Exercise Controller). Congratulations to Randy S Jacoby for winning the 120 volt controller. Thanks to David Thaw and the CMPD for allowing us to demonstrate our 12 volt Collision Avoidance Exercise Controller system on the CVOC (Charlotte Vehicle Operations Course). All participants of the CVOC tours on Tuesday got to see our controller system in action.
Because of limited space at the CVOC on Tuesday, we scaled our exercise down and used about half of the available 300 ft of cable. Although the exercise was scaled down, it still showed the effectiveness of the 12 volt Collision Avoidance Exercise Controller system. Click on the picture below to see a video of the demonstration.
ALERT Demo Video

The Collision Avoidance Exercise Controller was made to improve and expand the ability to teach collision avoidance for drivers training. The exercise is also called perception reaction, evasive action, accident avoidance, accident evasion, evasive maneuver, as well as many other names. The basic idea of this exercise is to simulate a condition where the driver needs to make a quick decision and reaction to avoid a collision.
The Collision Avoidance Exercise Controller uses a vehicle detector to determine when a vehicle has entered the exercise, delays a user selected time delay, and then illuminates lights in lanes to represent objects blocking those lanes.
The Collision Avoidance Exercise Controller controls three traffic lights in three lanes. The controller illuminates lights in lanes to simulate that there is an object blocking that lane. The driving student must recognize the lane that the light is not illuminated and maneuver the vehicle through that lane or stop if all lights are illuminated. The controller has a variety of modes that the instructor can select to tailor an exercise.
The controller has an input for vehicle detection and a selectable time delay (0.0 to 9.9 seconds) so the instructor can adjust for different speeds and length of track.
Time delay from vehicle detection to lights being illuminated can be selected with dial switches in tenths of seconds increments from 0-9.9 seconds. The current mode is also set with a dial switch. Current mode and time delay is displayed on LCD screen.
| Mode | Street Lights | Response |
| Left | Left light "off" Center light "on" Right light "on" | Maneuver vehicle through left lane |
| Center | Left light "on" Center light "off" Right light "on" | Maneuver vehicle through center lane |
| Right | Left light "on" Center light "on" Right light "off" | Maneuver vehicle through right lane |
| Stop | Left light "on" Center light "on" Right light "on" | Stop vehicle |
| 2 Way Random | Random Left or Right Mode | Random Left or Right Mode |
| 3 Way Random | Random Left, Center, or Right Mode | Random Left, Center, or Right Mode |
| 2 Way Random with Stop | Random Left, Right, or Stop Mode | Random Left, Right, or Stop Mode |
| 3 Way Random with Stop | Random Left, Center, Right, or Stop Mode | Random Left, Center, Right, or Stop Mode |
12 volt Collision Avoidance Exercise Controller system package includes:
12 Volt Controller | |
![]() | This system gives the availability to setup up a collision avoidance exercise anywhere you have a cigarette plug (most vehicles), or 120-volt household electricity. Purchase of controller comes with cigarette plug and wall transformer power plug. The controller powers three 12 volt red 8" led traffic lights. For vehicle detection, an air hose vehicle detector or our retro-reflective vehicle detector can be used. |
Accessories needed
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120 Volt Controller | |
![]() | The 120 volt controller is powered by a standard 120-volt household plug. There are three standard 120-volt outlets on the controller to plug the left, center, and right lights into. The outlets can drive 2 amps a piece. Any lights can be run off this controller, as long as they are 120-volt and require less than 2 amps. For vehicle detection, an air hose vehicle detector or our retro-reflective vehicle detector can be used. |
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Accessories needed
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Vehicle Detector | |
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Retro-Reflective Sensor Extension | |
![]() | 6 meter extension cable for the Retro-reflective vehicle detector |
Red LED 8" Traffic Light | |
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3 Red LED 8" Traffic Lights | |
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Traffic Light Cable | |
![]() | Cable for connecting 12 volt controller and three 12 VDC traffic lights (available in custom lengths) |
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