Are train speeds in the UK measured in Mph/Kph?

[zwk500]

While that's true now, we'll have to see what the "bonfire of needless EU regulation" does to them in the Bill now going through Parliament.
They seem determined to alter the legislation that gave us EU261 for air travel delay compensation - to something lower for domestic UK flights.
Apparently there are 800 pieces of legislation to change across government (down from 3000-odd when they started), with transport one of the affected sectors.

As @IndianPacific says, theres no real desire to move away from standardisation and this really isnt something that is going to get the public riled up so i dont see ministers being overly fussed about breaking with Europe.

 

[IndianPacific]

Still in KPH on the Cambrian. The digital Speedo on the ERTMS screen shows in KMH when on ERTMS and in MPH when it's in level 0. If ERTMS is isolated it falls back to an analogue speedometer which shows both kmh and mph.

The 197s when running with ETCS isolated still use the digital screen to show a speedometer - and you can set that to either kmh or mph by tapping it. I don't know if you'll still be able to change it when running in level 0 or 2 however.

Interesting, thank you.

It's similar on the class 700s, when not in ETCS the DMI shows the speedo and sunflower.

 

[Joliver]

AIUI, when in ATO both TL and EL trains run to kmh (50 / 100 kph max speed in the respective cores).

I must admit I don’t remember what units the speed limit is displayed as when being driven (by the driver) in ETCS / CBTC respectively, and I’ve been in the cab for both so should really know!

EL is all displayed in MPH

 

[DanNCL]

The Durham Coast line is dual marked in mph and kmh between Pelaw and Sunderland, as is the South Hylton branch and Pelaw - Jarrow. The KMH signs also act as differentials for metro units, for example in Sunderland station the line speed is 15mph, but Metro is restricted there to 15kmh. Max speed on the KMH signage is 80kmh, also the max speed of the Metro fleet, even where line speed allows 70mph for other stock.

 

[MarkyT]

National Technical Specification Notices (NTSNs), these still point to the ERA website for all technical detail. From my (very limited) exposure, there is no real desire in the industry to depart from what the rest of the world is doing. ETCS has been picked up by many non-EU countries and customers like the interoperability of track and train and relative that it allows.

It would be totally counterproductive to substantively change UK regulations away from the technical aspects of the TSIs and, in particular, the ETCS standards as all the domestic and international manufacturers that supply UK railways are geared up to support the now fairly mature technology on both track and train. Rules on what routes and when we must roll it out on the network are different however as full international interoperability is of only minimal concern on this island, due to limited connections and other matters such as power supply and loading gauge on the classic network. The whole interoperability effort is as much about railway administrations avoiding supplier lock-in as it is about traction being able to seamlessly cross borders. It was a founding principle of the UIC (international union of railways) from its formation in 1926, well before the EEC or EU.

 

[Horizon22]

AIUI, when in ATO both TL and EL trains run to kmh (50 / 100 kph max speed in the respective cores).

I must admit I don’t remember what units the speed limit is displayed as when being driven (by the driver) in ETCS / CBTC respectively, and I’ve been in the cab for both so should really know!

Correct, although its measured at 62mph on EL (for 100kph) for ease when leaving the core and alignment with the rest of the route. That's the speed the driver would see in the cab.