PePiPoo Helping the motorist get justice Support health workers

Welcome Guest ( Log In | Register )

How accurate are speedometers?
Boudicca21
post Thu, 24 Nov 2022 - 17:46
Post #1


Member


Group: Members
Posts: 30
Joined: 9 Dec 2015
Member No.: 81,138



I’m just curious about this.

A route I’ve recently been taking involves a downhill stretch of a 30 that has one of those electronic ‘slow down’ signs. It tells me to slow down when my speedometer says I’m doing 30 or a fraction below. I discovered today that it turns itself off when approaching speed goes down to 25.

Now it seems to me to be highly likely that speedometers are not spot on accurate, but what’s the margin of error? I was under the impression that I was pretty good at sticking to speed limits but if if I’m doing 30 when the speedometer says 25 that’s a bit worrying.

OTH a solicitor recently told me that speedometers routinely display a faster than actual speed. So for example it it shows 30 you are probably doing 27 or 28.
Go to the top of the page
 
+Quote Post
2 Pages V  < 1 2  
Start new topic
Replies (20 - 20)
Advertisement
post Thu, 24 Nov 2022 - 17:46
Post #


Advertise here!









Go to the top of the page
 
Quote Post
andy_foster
post Thu, 1 Dec 2022 - 17:47
Post #21


Member
Group Icon

Group: Life Member
Posts: 24,213
Joined: 9 Sep 2004
From: Reading
Member No.: 1,624



QUOTE (mickR @ Thu, 1 Dec 2022 - 15:10) *
Bob Marley music affects GPS??


You need a minimum of 4 satellites for a GPS lock, so three little birds won't cut it.


--------------------
Andy

Some people think that I make them feel stupid. To be fair, they deserve most of the credit.
Go to the top of the page
 
+Quote Post

2 Pages V  < 1 2
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



Advertisement

Advertise here!

RSS Lo-Fi Version Time is now: Thursday, 28th March 2024 - 14:57
Pepipoo uses cookies. You can find details of the cookies we use here along with links to information on how to manage them.
Please click the button to accept our cookies and hide this message. We’ll also assume that you’re happy to accept them if you continue to use the site.
IPS Driver Error

IPS Driver Error

There appears to be an error with the database.
You can try to refresh the page by clicking here