Atomic Systems

When speed limit signs say 125mph. is a train considered to be over speed at 125.3mph?

Thanks

Simon

Yes. I drove HSTs for First I assure you that 125mph means 125mph, not 125.3mph for example.
If you and your train have an accident, although its only a minute overspeed of .3mph, you will be still speeding.

Well I think I can live with that! Besides you cant control the speed that accurately in RW's.

Cheers for that. I thought it maybe the case. .... maybe one of the re-skinners could redo the BR HST logo to be the Inter City 124.9mph?

TheTazman wrote:Cheers for that. I thought it maybe the case. .... maybe one of the re-skinners could redo the BR HST logo to be the Inter City 124.9mph?

btvboxer

Reminds me of the time on a US motorsport board I saw people talking about the Indianapolis 499.5 because they disagreed with a couple of decisions by the governing body at the time and thought it was no longer worthy


An even more concerning case of false advertising is the Intercity 225 (a Class 91 loco hauling/shoving Mark 4 coaches and a DVT) which can go no faster in service than the IC125 trains. Or the use of the term "high speed" to describe a train which doesn't exceed 200 km/h in service.

At the time it first appeared, the HST *was* high speed; it was only that and the original Shinkansen back then, and that wasn't any faster.

transadelaide wrote:An even more concerning case of false advertising is the Intercity 225 (a Class 91 loco hauling/shoving Mark 4 coaches and a DVT) which can go no faster in service than the IC125 trains. Or the use of the term "high speed" to describe a train which doesn't exceed 200 km/h in service.

If it was the case, then surely, British Rail should have called it the Intercity 125E (E = electric) or even the name the prototype had, Electra?

Railworks does allow you to go up to .9 beyond the posted limit before it considers you as speeding and the indication flashes red at you.

Here is what the IC124.9 would (sort of) look like.

Click the image to zoom in

This is not the best editing ever, this was done in Paint in 5 minutes.

btvboxer

That's the ticket!

I think the Inter City 225 referred to the speed in kilometres/hour which converted to real money= 139.8085182534 MPH (don't want to overspeed), 140 MPH being the design speed of the Class 91's, although as rightly pointed out they are restricted to 125 MPH. Think the original plans were to run at 140 MPH, but was never allowed due to signalling safety concerns. Remember many years ago a French relative who worked on designing the TGV saying that they were impressed with the HST running at 125 MPH on existing tracks on our congested network.They had to build a whole new railway for their HST!

Regards,

Len

transadelaide wrote:

An even more concerning case of false advertising is the Intercity 225 (a Class 91 loco hauling/shoving Mark 4 coaches and a DVT) which can go no faster in service than the IC125 trains. Or the use of the term "high speed" to describe a train which doesn't exceed 200 km/h in service.

Actually they are capable of running at 140mph. Given the maximum speed restriction on the UK road network is 70mph, any speed above that can justifiably be termed high speed

smarty2 wrote:Well I think I can live with that! Besides you cant control the speed that accurately in RW's.

Its pretty difficult to accurately control the speed on a real train as well

And cars were always allowed a speedometer error percentage, wouldn't train speedo's be the same?
Going back to the steam era, many older engines didn't even have a speedometer.
I think here in the UK we're quite happy to call 125 mph. high speed.
( my Volvo D5 was quoted as being able to reach 140 mph. and early one morning on my way to work I got to 120 before I bottled out. )

Chris.