High Severity Issue
This component has been associated with crashes, fires, or deaths.
This Problem Across All Years
While driving on the highway on cruise at 70mph the right front brakes locked up. The day was clear. I was driving across a bridge. The truck pulled to the right and I fought to pull it back on to the road. My company has the incident on camera. I was pulling a loaded tanker. Had the pavement been wet or snowy I could have easily jack knifed. If a vehicle would have been next to me I would have struck them. The vehicle was inspected by our mechanic and was told the system was within specs. The truck has also hard braked and pulled to the right when vehicles in the lane next to it are turning.
While driving on the highway on cruise at 70mph the right front brakes locked up. The day was clear. I was driving across a bridge. The truck pulled to the right and I fought to pull it back on to the road. My company has the incident on camera. I was pulling a loaded tanker. Had the pavement been wet or snowy I could have easily jack knifed. If a vehicle would have been next to me I would have struck them. The vehicle was inspected by our mechanic and was told the system was within specs. The truck has also hard braked and pulled to the right when vehicles in the lane next to it are turning.
A collision avoidance system (CAS), also known as a pre-crash system, forward collision warning system (FCW), or collision mitigation system, is an advanced driver-assistance system designed to prevent or reduce the severity of a collision. System applied brakes bringing our Unit to a complete stop traveling 55 MPH on an Interstate while making a lane change, Because of this our Unit was rear-ended by another CMV, On board cameras video on both V1 and V2 clearly show incident. A print out of the DDEC shows code for braking system control at exact time of incident. In our fleet we have the same 2020 Freightliner Cascadia with this system and in trying to maintain the safety of our drivers and equipment no to mention our Insurance cost and CSA scores, This is a major issue as you can see on the Web the many cases and stories of these same incidents happening. Direction is needed Thank You
A collision avoidance system (CAS), also known as a pre-crash system, forward collision warning system (FCW), or collision mitigation system, is an advanced driver-assistance system designed to prevent or reduce the severity of a collision. System applied brakes bringing our Unit to a complete stop traveling 55 MPH on an Interstate while making a lane change, Because of this our Unit was rear-ended by another CMV, On board cameras video on both V1 and V2 clearly show incident. A print out of the DDEC shows code for braking system control at exact time of incident. In our fleet we have the same 2020 Freightliner Cascadia with this system and in trying to maintain the safety of our drivers and equipment no to mention our Insurance cost and CSA scores, This is a major issue as you can see on the Web the many cases and stories of these same incidents happening. Direction is needed Thank You
Semi was traveling on the highway and transporting a 48,000 pound steel coil. The steel coil was secured with 4 chains. The automatic emergency braking system engaged with nothing in front of the vehicle, causing it to suddenly come to a dead stop in traffic. This caused the steel coil to break free of its bounds, crash through the trailer and into the vehicle cab, trapping the driver.
Semi was traveling on the highway and transporting a 48,000 pound steel coil. The steel coil was secured with 4 chains. The automatic emergency braking system engaged with nothing in front of the vehicle, causing it to suddenly come to a dead stop in traffic. This caused the steel coil to break free of its bounds, crash through the trailer and into the vehicle cab, trapping the driver.
Ascending Tehachapi Pass CA Hwy 58 Eastbound in the left lane grossing 45,000lbs and traveling at 55mph with cruise control ON. I was passing another slower moving truck(~35-40mph). Before I came along the other vehicle the highway curved to the left. The Collision Aviodance System(CAS) didn't alarm, however the cruise control cut power and Automatic Emergency Braking(AEB) hardbraked my truck reducing the speed from 55mph to 40-45mph. This was sudden and unexpected. Once I determined the issue, I applied throttle overriding the AEB/CAS. However my forward momentum was lost and accelerating uphill was slow. It was midday and clear skies. No one was following me fortunately, but sudden and unexpected braking could have had a vehicle tailing too closely(It was an uphill grade with a speed limit of 65 mph for POV) rear-end my trailer(48 foot stepdeck trailer). Please explain to me how CAS/AEB are safety systems for a CMV?!? This is the 4th report I have filed with NHTSA about the same Freightliner Cascadia tractor. According to the vehicle operating Manual that this occurrence of unexplained and unwarranted braking is a "feature" of this "safety system". Meaning that the CAS/AEB was functioning as designed(A flawed designed in my professional opinion). I have been contacted by the NHTSA about previous filed report about an ongoing investigation with the manufacturer. What action is this agency going to take? Will there be an investigation when the system performs as designed causing an avoidable accident, injury, or death? Will I be a defendant, witness, or victim? Sincerely, [XXX] Junction City, Oregon INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
Ascending Tehachapi Pass CA Hwy 58 Eastbound in the left lane grossing 45,000lbs and traveling at 55mph with cruise control ON. I was passing another slower moving truck(~35-40mph). Before I came along the other vehicle the highway curved to the left. The Collision Aviodance System(CAS) didn't alarm, however the cruise control cut power and Automatic Emergency Braking(AEB) hardbraked my truck reducing the speed from 55mph to 40-45mph. This was sudden and unexpected. Once I determined the issue, I applied throttle overriding the AEB/CAS. However my forward momentum was lost and accelerating uphill was slow. It was midday and clear skies. No one was following me fortunately, but sudden and unexpected braking could have had a vehicle tailing too closely(It was an uphill grade with a speed limit of 65 mph for POV) rear-end my trailer(48 foot stepdeck trailer). Please explain to me how CAS/AEB are safety systems for a CMV?!? This is the 4th report I have filed with NHTSA about the same Freightliner Cascadia tractor. According to the vehicle operating Manual that this occurrence of unexplained and unwarranted braking is a "feature" of this "safety system". Meaning that the CAS/AEB was functioning as designed(A flawed designed in my professional opinion). I have been contacted by the NHTSA about previous filed report about an ongoing investigation with the manufacturer. What action is this agency going to take? Will there be an investigation when the system performs as designed causing an avoidable accident, injury, or death? Will I be a defendant, witness, or victim? Sincerely, [XXX] Junction City, Oregon INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
On Off ramp I-40 W Segliman, AZ there was a cattle guard 10 feet before Stop sign. I was braking for Stop Sign. AEB(aka CAS Collision Aviodance System) detected the cattle guard grate as obstruction, not something flat of the pavement, and apply maximum braking(Note: I was already braking). It had been snowing that night thou at this location the road was dry. Unnecessary panic braking by automated system can cause lose of control of vehicles on wet and icy surfaces. How is it safe for the AEB/CAS system to over ride the operator's action? Doesn't the CDL driver who is a trained and licensed professional have the ability to identify and take appropriate action, in this case a cattle guard grate wasn't a safety concern, whether to brake or avoid the obstacle? I have had numerous instances that I have and haven't reported to NHTSA of the deficiencies of the AEB/CAS falsely reading the conditions and taking the incorrect action. Sincerely, [XXX] AX Transportation INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
On Off ramp I-40 W Segliman, AZ there was a cattle guard 10 feet before Stop sign. I was braking for Stop Sign. AEB(aka CAS Collision Aviodance System) detected the cattle guard grate as obstruction, not something flat of the pavement, and apply maximum braking(Note: I was already braking). It had been snowing that night thou at this location the road was dry. Unnecessary panic braking by automated system can cause lose of control of vehicles on wet and icy surfaces. How is it safe for the AEB/CAS system to over ride the operator's action? Doesn't the CDL driver who is a trained and licensed professional have the ability to identify and take appropriate action, in this case a cattle guard grate wasn't a safety concern, whether to brake or avoid the obstacle? I have had numerous instances that I have and haven't reported to NHTSA of the deficiencies of the AEB/CAS falsely reading the conditions and taking the incorrect action. Sincerely, [XXX] AX Transportation INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
Wednesday 13 July, 2022 6:45pm PDT. Location US395 Lakeview, OR. Collision Avoidance System(CAS) applied maximum AEB braking for a false detection of obstruction in my travel lane. I was following a pickup and horse trailer at about 45mph. The pickup signaled a left turn and slowed. I applied minimum braking. The pickup and trailer turned clearing my travel lane(the tail end of the trailer was in the opposing lane). At this moment the CAS detected a collision warning(I was still applying some braking) and the AEB slammed on the brakes for about half second then canceled. The CAS has falsely detects numerous incidents a day for the 7 months I have driven this truck. The above incident has been the most severe. Other false incidents range from warning(without braking), cutting power to engine, to applying some amount of braking. At NO TIME during this period did the CAS detected a true obstruction. Manufacturer has checked that truck's system software is current and properly calibrated.
Wednesday 13 July, 2022 6:45pm PDT. Location US395 Lakeview, OR. Collision Avoidance System(CAS) applied maximum AEB braking for a false detection of obstruction in my travel lane. I was following a pickup and horse trailer at about 45mph. The pickup signaled a left turn and slowed. I applied minimum braking. The pickup and trailer turned clearing my travel lane(the tail end of the trailer was in the opposing lane). At this moment the CAS detected a collision warning(I was still applying some braking) and the AEB slammed on the brakes for about half second then canceled. The CAS has falsely detects numerous incidents a day for the 7 months I have driven this truck. The above incident has been the most severe. Other false incidents range from warning(without braking), cutting power to engine, to applying some amount of braking. At NO TIME during this period did the CAS detected a true obstruction. Manufacturer has checked that truck's system software is current and properly calibrated.
SHOW ABS NOT WORKING SERVICE REQUIRED ABS DETECTED INTERNAL PROBLEM,AND MAY NEED REPROGRAMMING OR REPLASEMENT STABILLY CONTROLS NOT WORKING SERVICE REQUIRED Error CODE 520247 31 ERROR CODE 1810
SHOW ABS NOT WORKING SERVICE REQUIRED ABS DETECTED INTERNAL PROBLEM,AND MAY NEED REPROGRAMMING OR REPLASEMENT STABILLY CONTROLS NOT WORKING SERVICE REQUIRED Error CODE 520247 31 ERROR CODE 1810