This is not about drivers hours or WTD but warnings you may get i.e speed warning (overspeed) & harsh braking…
Most companies set their own parameters with which ever tacho analysis company they use, some of the previous companies i have worked for have set their speed warning to trigger at 60mph for longer than 30seconds another was 56mph for longer than 1 minute even though the vehicles was restricted to 55. I know what some might be thinking WHY?? If the speed limit on M roads & dual carriage ways roads the speed limit is 60mph
You are not able pass the restricted speed by the accelerator alone you will more than likely be using gravity (going down a hill), so the vehicle is essentially OUT OF CONTROL as gravity is controlling your speed not.
If you should get a harsh breaking warning it is normally down to poor planning of the road ahead, unless you have to take action following someone else’s actions & they normally are triggered if you come of the power & straight onto the break & you speed drops by 10kph or more in 1 second or more, a classic example is traffic lights
Im sure someone like tachograph will be along to correct me on any points i may have got wrong.
yt03:
Harsh braking warning?? I’ve thrown the anchor out plenty of times and never seen this Not saying your wrong but never heard of it!!
Unlike an overspeed, their is no warning that appear on the head unit & nothing is stored on your card, it is stored on the head unit & when you employer downloads the head unit.
You will only know you have/had one if your employer tells you or you have access to your card analysis
I think you’re getting two things confused here. The digital tachograph registers an overspeed when you are exceeding the limiter speed (90 km/h), you get a warning after 30 seconds of continously over speeding then it is recorded after 60 seconds.
The other things you are referring to such as manner of braking and acceleration are monitored through telematics systems and are completely separate from the tachograph. Either through the vehicle’s computer system or as part of a standalone system like Microlise. The parameters of these systems and what they monitor is down to the company in question.
Glen A9:
I think you’re getting two things confused here. The digital tachograph registers an overspeed when you are exceeding the limiter speed (90 km/h), you get a warning after 30 seconds of continously over speeding then it is recorded after 60 seconds.
The other things you are referring to such as manner of breaking and acceleration are monitored through telematics systems and are completely separate from the tachograph. Either through the vehicle’s computer system or as part of a standalone system like Microlise. The parameters of these systems and what they monitor is down to the company in question.
Perhaps the op means a speed trace that you can obtain from the tacho ? Otherwise as you’ve mentioned above.
Everything i originally posted is correct according to the tachomaster site & occur with out the use of additional telematics, if you have access to a tachomaster program if your daily block is pink not green you have picked up one of these warnings
If gravity is controlling your speed above your restrictor your not so its out of control
I’ll be sure to mention that to my pilot when we next approach Alicante. I’m sure he’ll appreciate the heads up.
I’ll also avoid taking my foot off the throttle when approaching a red light (other obstacles are available) and instead keep it lit until I can keep it “under control” by standing on the brakes.
As a wild guess, he means probably out of control of the automated ancillary brake system (engine brake / retarder)
Not out of control as in a “running away vehicle”
And yes you can see harsh braking in a tacho analyse (some better than others, Stonridge is a 1 hz registration = once a minute, if I mind correctly Siemens/VDO is 4hz)
So if you see the speed reduction and the time it takes to stop you can easily calculate the braking. (Or let you analyse program do it for you)
I guess this is what they use in accident investigation, and also they can read out your acceleration, so they can quickly establish if you are a harsh driver leading up to an accident.
The old scratch card tacho was a bit to simple for that.
TheNewBoy:
If gravity is controlling your speed above your restrictor your not so its out of control
Talking out of your backside. When I’m going above the restrictor descending Windy Hill at 59MPH with the tacho screaming overspeed warning at me the downhill descent speed controller is engaged and it is maintaining my descent speed. My hand is on the steering wheel, my foot is ready to press the brake pedal if needed, my eyes are open and I’m looking at what is going on around me.
Even if a truck I drive doesn’t have that system fitted I’ll be maintaining my speed by occassionally applying the brakes as required.
The tacho can detect harsh braking. My last company used this method before they went to telematics. If the speed trace shows a deceleration of X amount of meters per second, the analysis software can determine this as a harsh braking event.
Funny that, I used to knock my manual car out of gear going down hills yet thats considered not being in control yet my new auto does it and its considered “eco friendly”.
Coasting can’t be considered out of control, don’t the new Volvo FH500’s actually set themselves to coast in neutral whenever possible to save fuel/the planet?
As far as overspends go, unless your getting loads of them our boss isn’t bothered by the odd one here or there as long as its nothing too insane.
Hammy747:
Coasting can’t be considered out of control, don’t the new Volvo FH500’s actually set themselves to coast in neutral whenever possible to save fuel/the planet?
As far as overspends go, unless your getting loads of them our boss isn’t bothered by the odd one here or there as long as its nothing too insane.
Coasting was seen as an unsafe practice until eco roll was invented and eco roll was seen to be unsafe by some drivers when it was programmed into a truck especially on an artic where you either have to be on the power or on the brakes in some situations, not coasting which the truck is deciding to do and not the driver unless he/she overrides it, the truck can’t see the lay out of the road ahead and can and will put the vehicle into a dangerous situation if the driver doesn’t take full control in these areas, I have seen and experienced how eco roll can compromise an artics stability and won’t allow the truck to go into eco in these areas.
Not saying your wrong but never heard of it!!