The SLO-LITE SYSTEM is the "NEW" product to enhance the safety of your truck. It turns your truck into a variable message sign, notifying drivers of distant traffic conditions. The SLO-LITE SYSTEM is cost-effective and socially economical for the trucking industry and general public safety.   When Stopping, turning and entering work zones, etc.. “SLO-LITE” IS THE FIRST SAFETY SIGNAL DRIVERS WILL SEE when approaching your truck from the rear.


   The appealing features of THE SLO-LITE SYSTEM would be its safety, automatic operation, and convenience. Instead of following drivers being completely unaware of a decelerating truck or bus with the engine brake in use, this color-coded rear brake lighting system would be viewed. This would keep other drivers alert and aware of the potential danger when the standard pneumatic brakes were not being applied.



Not being able to react in time to a tractor-trailers deceleration due to poor visual communication can present serious problems. It could result in rear-end collisions causing damage to both vehicles as well as possible loss of life.  Motorist who are drowsy distracted, drunk, or daydreaming are particularly susceptible to this type of rear-end collision. 

  In an effort to improve visual communication from heavy-duty trucks and buses regarding deceleration, THE SLO-LITE SYSTEM was brought into conception. The rear lights would actually reflect the level of danger and keep following traffic alert of deceleration. Instead of being surprised by sudden slowdown, the following driver with see these special illuminated brake lights to allow plenty of time to prepare for a possible stop.

DOT and SLO-LITE SYSTEM rear warning following vehicle

This flatbed trailer has a Slo-lite Full Bar lighting system. Notice how it warns the driver behind without the truck driver applying his service brakes and lights

WHAT'S all the noise about!


 Engine brakes...BRAKE at approximately the same braking horsepower (bhp) as the engine produces (hp). Example: a truck having an engine rated at 500 hp has approximately 500 (bhp) that will aggressively slow a truck down empty as well as loaded (ALL WITH NO WARNING SIGNAL).  

              There are 8.22 million single-unit trucks registered in the United States, which travel more than 110.7 billion miles each year. According to the American trucking Association ATA as of 2015, 3.63 million class VIII trucks( Not including Class 3-7) were on the highway in 2015. (Note: 94% of these trucks are equipped with engine brakes). 

There was a time when trucks with engine brakes would be noticeable with the noise that you would hear coming from the exhaust pipes while driver was applying the engine brake. But with noise regulations being as they are most trucks are equipped with mufflers to eliminate the noise so drivers do not notice trucks are slowing down until they are closer to the rear of the truck than they normally would be. Therefore, the approaching driver having to apply his brakes in a abrupt manner and the vehicle behind him possibly having to do the same. Most truck drivers use the engine brakes or retarders a majority of the time to eliminate the wear of the normal service breaks. 


Currently, there are no statistics to prove that engine braking without a warning signal may have caused any accidents, but in any rear-end or under-ride accident, has anyone ever heard an investigating officer ask? 

   1.“Was the trucker engine braking before being rear-ended” or, 

   2.“Was the trucker engine braking prior to peddle braking before being rear-ended” or, 

   3.“Did the trucker peddle brake at all or were they just engine braking before being rear-ended? Did the officer look in the cab to see if the engine brake switches were “ON”? 

     These are some of the most important questions that should be asked and answered in any moving class 3-8 under-ride or rear-end accident. “Reaction time is critical in preventing collisions”. We have no statistics. BUT... We’ll get back to this in a minute. 


           Under-riding, rear-end collisions, tailgating, and even road rage have become a problem on our highways today. With under-riding and rear-ends collisions being the deadliest, the government has waited for the trucking industry to prove that it could do something to prevent these accidents and deaths. The trucking industry, for its part, has been waiting for the government to tell it whether or not, and how, to address this problem — before devoting R & D resources to it in order to come up with solutions. “WE HAVE A SOLUTION!!” 

         The SLO-LITE SYSTEM  is the NEWEST product  to enhance the safety of vehicles following our heavy trucks on the highways and roads today. In a case study, Diamer-Benz says AN EXTRA 1.5 SECONDS CAN PREVENT 90 PERCENT OF REAR-END COLLISIONS. Most truck drivers use their engine brakes or retarder’s most of the time BEFORE using their service brakes. While engine braking, the truck can continue to travel “several seconds” before the driver apply their service brakes (if even applies it at all) without the following motorist receiving any signal that it is decelerating it's speed. When inattentive, drivers take longer to perceive danger and subsequently take longer to initiate an avoidance maneuver.   

THE SLO-LITE SYSTEM could help avoid unwanted surprises and rear-collisions that result in serious vehicle damage, higher insurance costs, injuries, and possible fatalities. It could provide peace of mind to safety-conscious professional drivers who are well aware of this particular shortcoming. In addition, this system would be reliable, cost-effective, and readily adaptable to different types of aftermarket and new production trucks and buses.


       1. Referring back to the statistic issue, it is our belief that the proper authorities should  include the questions previously raised concerning at the scene of under-ride and rear-end accidents. It should be mandatory that these questions 1,2,or 3 be asked, answered and filed with the accident report for accident investigation, insurance liability purposes and statistics. 

      2. Once The SLO-LITE SYSTEM is installed, it should be checked and marked daily along with all safety items on the drivers Daily Inspection Report.

           Let’s be honest with ourselves, with the advancement of new phones, new apps, maps, and the gadgets that come and go with them, and the introduction of new drivers, (who need more advanced warning than most drivers), The SLO-LITE SYSTEMS are the new “THIRD LIGHT FOR SAFETY" for CLASS 3-8  trucks & ALL drivers of THIS NEW MILLENNIUM. 

FROM THE: THE NTSA’s 2017-2018 LIST of MOST WANTED Transportation Safety Improvements for Commercial

 We recommended that, as soon as possible, NHTSA develop performance standards for collision avoidance systems in commercial vehicles. But companies and commercial vehicle operators shouldn’t wait to be told what to do by regulators; they should install these technologies in all their fleets. In a recent study of motor carriers, the Federal Motor Carrier Administration found some collision avoidance technologies to be beneficial and endorsed (but did not require) their voluntary use 


Don't let this happen to you.

 We understand and agree with the fight and need for side and rear under guards for tractor-trailers, but notifying the rear approaching motorists “several seconds” before is just as important.  



Most “Veteran” truck drivers, in various traffic conditions drive only using their engine brake to prevent having to stop their rig just to start over again, especially if being loaded.


Update your truck with the "latest and Coolest" Safety light on the market today!

Yea..We've had our share of passenger car rearends and underrides over the past 30 years, including one fatality. That's why we are bringing this to product to you.

Thank You for your time

Need a Quote?


 Contact our Experts @ 

Have a question about your truck and The Slo-Lite System? An expert from Collision Warning Systems will be happy to discuss it with you.

Collision Warning Signals

14500 Neale Drive Brandywine, Maryland 20613, United States



Monday - Friday: 9am - 5pm

Saturday: 8am - 12pm

Sunday: Closed