| View previous topic :: View next topic |
| Author |
Message |
M8TJT
The Other Tired Old Man
Joined: Apr 04, 2006
Posts: 10118
Location: Bexhill, South Sussex, UK
|
 Posted: Sat May 28, 2016 7:27 pm Post subject: |
 |
|
Watch out suss. he's behind you.  |
|
| Back to top |
|
 |
Kremmen
Pocket GPS Verifier
Joined: Mar 03, 2006
Posts: 7223
Location: Reading
|
| Posted: Sun May 29, 2016 5:57 am Post subject: |
|
|
When I was preparing for my advanced driving test back in the 80's one of the first things I was told is that the object of good driving is to arrive at your destination as refreshed as when you set out.
By looking ahead, leaving plenty of braking room, staying in lane and observing speed limits is a good first start. Drivers who are continually speeding, changing lanes and looking out for the authorities tend to arrive very tired and worn out by there continual heavy attention plus they probably only gain minutes overall which is a poor trade off.
_________________
DashCam:
Viofo A119 V3 |
|
| Back to top |
|
|
JimmyTheHand
Frequent Visitor
Joined: Apr 16, 2005
Posts: 386
|
| Posted: Sun May 29, 2016 7:05 pm Post subject: |
|
|
| sussamb wrote: | Following your logic to conclusion we should all drive as fast as possible so the journey is over as quickly as possible, do you really think that would reduce accidents or be less dangerous  |
No that is you trying to take a single point of mine to a logical extreme to show the fallacy and/or trying to ridicule arguments you don't like – however my point is there are more factors to safety than purely how close you are to some, increasingly, often arbitrary speed limit – a lot of these factors will have relationships to speed and likely to be non-linear - you need to consider them all to understand what impacts safety. Or you could just continually treat speed as the only cause of issues and the only way to increase safety at that point is reduce the speed limits and be surprised when accident rates go up.
_________________
J. |
|
| Back to top |
|
|
JimmyTheHand
Frequent Visitor
Joined: Apr 16, 2005
Posts: 386
|
| Posted: Sun May 29, 2016 7:13 pm Post subject: |
|
|
| M8TJT wrote: | | JimmyTheHand wrote: | | The longer you are on a road the more chance there is of something random happening. |
Based on that theory then, it's best to jump a red light at 100MPH because you are exposed to the danger for less time? So there seems to be something wrong with your theory as the latter example is plain wrong and stupid. |
Ignoring the ridiculousness of your extrapolation, I didn't suggested speed doesn't increase risks – merely there are other risks and issues that need considering
_________________
J. |
|
| Back to top |
|
|
JimmyTheHand
Frequent Visitor
Joined: Apr 16, 2005
Posts: 386
|
| Posted: Sun May 29, 2016 7:21 pm Post subject: |
|
|
| NukeThemAll wrote: | | Assuming a car has a constant deceleration, |
A big assumption I think
_________________
J. |
|
| Back to top |
|
|
JimmyTheHand
Frequent Visitor
Joined: Apr 16, 2005
Posts: 386
|
| Posted: Sun May 29, 2016 7:30 pm Post subject: |
|
|
| M8TJT wrote: | | Watch out suss. he's behind you. |
probably the one leaving plenty of space
| Kremmen wrote: | When I was preparing for my advanced driving test back in the 80's one of the first things I was told is that the object of good driving is to arrive at your destination as refreshed as when you set out.
By looking ahead, leaving plenty of braking room, staying in lane and observing speed limits is a good first start. Drivers who are continually speeding, changing lanes and looking out for the authorities tend to arrive very tired and worn out by there continual heavy attention plus they probably only gain minutes overall which is a poor trade off. |
The biggest thing we could do to increase safety is leave an average of an extra second space between vehicles - but the amount of traffic and the impatience of drivers won't allow it.
_________________
J. |
|
| Back to top |
|
|
sussamb
Pocket GPS Verifier
![]()
Joined: Mar 18, 2011
Posts: 4462
Location: West Sussex
|
| Posted: Sun May 29, 2016 7:47 pm Post subject: |
|
|
| JimmyTheHand wrote: |
The biggest thing we could do to increase safety is leave an average of an extra second space between vehicles - but the amount of traffic and the impatience of drivers won't allow it. |
Really? I do it all the time. Never a problem and 'leaving space around you' was one of the things hammered home when I was on my blue light driving course 
_________________
Where there's a will ... there's a way. |
|
| Back to top |
|
|
DennisN
Tired Old Man
Joined: Feb 27, 2006
Posts: 14907
Location: Keynsham
|
| Posted: Sun May 29, 2016 7:52 pm Post subject: |
|
|
I'm not very good at sums and extrapollution of arguments.
Does anybody mind if I just drive within the posted speed limit, not up to it?
_________________
Dennis
If it tastes good - it's fattening.
Two of them are obesiting!! |
|
| Back to top |
|
|
Oldboy
Pocket GPS Moderator
Joined: Dec 08, 2004
Posts: 10644
Location: Suffolk, UK
|
| Posted: Sun May 29, 2016 9:00 pm Post subject: |
|
|
| DennisN wrote: | | Does anybody mind if I just drive within the posted speed limit, not up to it? |
+1
_________________
Richard
TT 910 V7.903: Europe Map v1045
TT Via 135 App 12.075: Europe Map v1145 |
|
| Back to top |
|
|
JimmyTheHand
Frequent Visitor
Joined: Apr 16, 2005
Posts: 386
|
| Posted: Sun May 29, 2016 9:53 pm Post subject: |
|
|
| sussamb wrote: | | JimmyTheHand wrote: |
The biggest thing we could do to increase safety is leave an average of an extra second space between vehicles - but the amount of traffic and the impatience of drivers won't allow it. |
Really? I do it all the time. Never a problem and 'leaving space around you' was one of the things hammered home when I was on my blue light driving course |
The issue is not that individuals can leave gaps, but what it would do to road carrying capacity if most chose to drive safely (judging by what I see during commute I doubt most know what that is) - I suspect the maximum number of vehicles per hour means unsafe distances
_________________
J. |
|
| Back to top |
|
|
Privateer
Pocket GPS Moderator
Joined: 30/12/2002 17:36:20
Posts: 4921
Location: Oxfordshire, England, UK
|
| Posted: Mon May 30, 2016 1:20 pm Post subject: |
|
|
| JimmyTheHand wrote: | | The issue is not that individuals can leave gaps, but what it would do to road carrying capacity if most chose to drive safely (judging by what I see during commute I doubt most know what that is) - I suspect the maximum number of vehicles per hour means unsafe distances |
But then it only takes one to drive unsafely and with too small a gap to create a collision that at best would really reduce the hourly road carrying capacity (road partially or even fully blocked) and at worse one or more serious injuries or even deaths.
It's better to be five minutes late in this world than five years early in the next, although leave ten minutes early and you won't be late! 
_________________
Robert.
iPhone 6s Plus, iOS 14.0.1: iOS CamerAlert v2.0.7
TomTom GO Mobile iOS 2.3.1; TomTom (UK & ROI and Europe) iOS apps v1.29
Garmin Camper 770 LMT-D |
|
| Back to top |
|
|
DennisN
Tired Old Man
Joined: Feb 27, 2006
Posts: 14907
Location: Keynsham
|
| Posted: Mon May 30, 2016 3:54 pm Post subject: |
|
|
Aha. Does that mean if I drive within the speed limit I've still got another five years?
_________________
Dennis
If it tastes good - it's fattening.
Two of them are obesiting!! |
|
| Back to top |
|
|
Duddy
Lifetime Member
Joined: Dec 09, 2006
Posts: 219
Location: Manchester UK
|
| Posted: Wed Jun 01, 2016 12:15 am Post subject: Speeding tickets issued against guidlines |
|
|
Just picked up this tread. Without going into the ins and outs of exceeding the speed limit a question was asked what the stopping distance difference was between 30 and 33 mph.
It is of course variable dependant on road condition but using the figures from the highway code (Not admissable in law) i.e. deceleration rate of 0.68g the stopping distance from 30 mph would be 13.47m (44ft 2.5 inch) and from 33 mph 16.31m (53ft 6inch). Difference 2.84m further.
_________________
HUAWEI P30 Pro (new edition) with Speedtrap Alert & alcatel1 for SatNav
CoPilot 10 with CamerAlert
RoadHawk in-car video
Reading glasses getting thicker as is my waist
Retired but want to go back to work for a rest. |
|
| Back to top |
|
|
Kremmen
Pocket GPS Verifier
Joined: Mar 03, 2006
Posts: 7223
Location: Reading
|
| Posted: Wed Jun 01, 2016 4:39 am Post subject: |
|
|
Has the highway code stopping distances been revised at all?
When those figures were originally calculated we still had drum brakes and pre-stretched cables.
On the other hand though thinking distance has probably increased with all the in car gadgets taking your concentration off the road now.
Only last week we followed a car who was veering and speed varying. When I managed to get past, my passenger said he was looking down into his lap, presumably texting.
_________________
DashCam:
Viofo A119 V3 |
|
| Back to top |
|
|
M8TJT
The Other Tired Old Man
Joined: Apr 04, 2006
Posts: 10118
Location: Bexhill, South Sussex, UK
|
| Posted: Wed Jun 01, 2016 8:54 am Post subject: Re: Speeding tickets issued against guidlines |
|
|
| Duddy wrote: | | the stopping distance from 30 mph would be 13.47m (44ft 2.5 inch) and from 33 mph 16.31m (53ft 6inch). Difference 2.84m further. |
That's a bit over 9 feet extra. So a 10% increase in speed results in stopping distance increasing by 21%
And as a matter of interest, if you apply the 10%+2 to 30 =35, the stopping distance is now 60.22 ft. that's an increase of 36% over 30MPH. |
|
| Back to top |
|
|
|
![]() Posted: Today Post subject: Pocket GPS Advertising |
|
|
We see you’re using an ad-blocker. We’re fine with that and won’t stop you visiting the site.
Have you considered making a donation towards website running costs?. Or you could disable your ad-blocker for this site. We think you’ll find our adverts are not overbearing!
|
|
| Back to top |
|
|
|
Forum FAQ
Search
Usergroups
Profile
Log in for private messages
Log in
