Lower speed equals less time to react?
Discussion
james_j said:
Yes, and what's the betting that the troll has not even read the page in question.
He has read it and disagrees with the meanderings within.
It's interesting to see that some forum users say that the Troll word is used when their own point of view or position is challenged and they cannot defend it. I thik that this is the case here. It is obvious to all that reaction time is shorter the greter the number of meters that are covered per second. That is a physical fact. Nonesense spouted about less concentration, less attention, less comprehension of hazards at lower speeds are just that, nonesense. The reaction time is the time between comprehending the hazard (including realizing you need to avoid it) and taking the action. Increased alertness is not connected to an increase in speed, that is an unqualified notion put forward by those unqualified to do so.
If putting forward an alternative view to the sheeplike following on this thread is being a troll then that is what I am but you can use the definition I have put forward here, that troll is called when the central position is undefendable and challenged.
>> Edited by destroyer on Friday 9th April 20:48
This is a point I have been making for years. As far as I personally am concerned there is an optimum speed at which I need to drive in order to maintain full attention on what I am doing.
Others may differ, my mother for example is able to deliver a monologue while looking in every shop window she passes as well as driving the car. Such skills are beyond me, and when with her I find it best to just put on my blindfold and pray for a safe arrival at my destination
In a busy street with a 30 mph limit that speed will often be far less than 30 mph. On the open road with good weather and visibility and little traffic however it's a different story, and under those circcumstances 60 mph is often too slow as is 70 mph on the motorway or a dual carriageway.
The problem is that if I'm not at the optimum attention level, then my mind wanders to to other things, and I loose concentration on my driving and it becomes erratic, therefore I am more dangerous at a slower speed.
Others may differ, my mother for example is able to deliver a monologue while looking in every shop window she passes as well as driving the car. Such skills are beyond me, and when with her I find it best to just put on my blindfold and pray for a safe arrival at my destination
In a busy street with a 30 mph limit that speed will often be far less than 30 mph. On the open road with good weather and visibility and little traffic however it's a different story, and under those circcumstances 60 mph is often too slow as is 70 mph on the motorway or a dual carriageway.
The problem is that if I'm not at the optimum attention level, then my mind wanders to to other things, and I loose concentration on my driving and it becomes erratic, therefore I am more dangerous at a slower speed.
I think there is a very similar effect with too much road signage information.
You are bombarded with so many signs, white lines & roadside council applied information you simply go into information overload & take no notice of any of it.
Don't forget most people could'nt tell what the last warning sign was, let alone what it means, let alone what sort of hazard it might generate.
So long as you drive looking at your speedo all is well
You are bombarded with so many signs, white lines & roadside council applied information you simply go into information overload & take no notice of any of it.
Don't forget most people could'nt tell what the last warning sign was, let alone what it means, let alone what sort of hazard it might generate.
So long as you drive looking at your speedo all is well
destroyer said:
It is obvious to all that reaction time is shorter the greter the number of meters that are covered per second. That is a physical fact.
Time to react is delivered out of many things. Here's a quick list:
1) Driver attention
2) Quality of driver observation
3) Quality of forward planning (including speed adjustments before the hazard is threatening)
4) Luck
5) Speed
I trust you'll agree that a driver at...
* ...50 feet per second, 200 feet from a hazard with his eyes tight shut gets no time to react at all.
* ...100 feet per second 200 feet from the same hazard has 2 seconds to react if he's paying proper attention.
Best Regards,
Paul Smith
Safe Speed
www.safespeed.org.uk
safespeed said:
Time to react is delivered out of many things. Here's a quick list:
And here's a new page with a proper list and a discussion of the subject:
www.safespeed.org.uk/timetoreact.html
Best Regards,
Paul Smith
Safe Speed
www.safespeed.org.uk
destroyer said:
It is obvious to all that reaction time is shorter the greter the number of meters that are covered per second.
Sorry destroyer, you've got your facts inside out..... the reaction time does not depend on the speed. It (usually) remains the same......the distance one covers in that time may however be greater due to a higher velocity. The reaction time will change however due to any variation of attention/concentration......
destroyer said:
Yes, and what's the betting that the troll has not even read the page in question.
He has read it and disagrees with the meanderings within.
It's interesting to see that some forum users say that the Troll word is used when their own point of view or position is challenged and they cannot defend it. I thik that this is the case here. It is obvious to all that reaction time is shorter the greter the number of meters that are covered per second. That is a physical fact. Nonesense spouted about less concentration, less attention, less comprehension of hazards at lower speeds are just that, nonesense. The reaction time is the time between comprehending the hazard (including realizing you need to avoid it) and taking the action. Increased alertness is not connected to an increase in speed, that is an unqualified notion put forward by those unqualified to do so.
If putting forward an alternative view to the sheeplike following on this thread is being a troll then that is what I am but you can use the definition I have put forward here, that troll is called when the central position is undefendable and challenged.
>> Edited by destroyer on Friday 9th April 20:48
You didn't challenge Paul's point-of-view, but just made a comment that he "needs to sleep more". That was not a sensible and carefully-worded argument, it was a trolling.
Tootler said:
This is a point I have been making for years. As far as I personally am concerned there is an optimum speed at which I need to drive in order to maintain full attention on what I am doing.
Others may differ, my mother for example is able to deliver a monologue while looking in every shop window she passes as well as driving the car. Such skills are beyond me, and when with her I find it best to just put on my blindfold and pray for a safe arrival at my destination
In a busy street with a 30 mph limit that speed will often be far less than 30 mph. On the open road with good weather and visibility and little traffic however it's a different story, and under those circcumstances 60 mph is often too slow as is 70 mph on the motorway or a dual carriageway.
The problem is that if I'm not at the optimum attention level, then my mind wanders to to other things, and I loose concentration on my driving and it becomes erratic, therefore I am more dangerous at a slower speed.
With you all the way there Tootler. I set off for a long journey and i always like to make progress and find it a challange to make sure i'm in the right lane, never gettin blocked in by other cars, getting the head of the queue before it goes back to single lane again and i do all this without barging or being aggressive as that too is a challange making good progress while being courteous and managing to pass through the traffic by the easiest means.
But it takes me about 30 mins of spirited driving before i'm in the zone but once there everything is so much easier, the gaps just open up for me, always in the right lane and overtaking is easy, because my concentration leves work best at this rate of driving.
Unfortunately that does'nt mean that everyone around me is in the zone also but i find i'm better at spotting the numpty that's about to commit a dangerous manouvre because they're bored and didn't pay attention before pulling out etc.
Del
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