On Thursday, 16 March 2017 12:50:31 UTC, wrote:
On Thu, 16 Mar 2017 11:21:02 +0000 (GMT), "Dave Plowman (News)"
wrote:



of course. Which is why - especially given it's glacial timescale - HS2
seems like an absolute waste of money.

Driverless cars will never match the speed of a train between city centres.

Who knows what may happen,

Most that don't have their heads in clouds.

a train at present is a collection of
vehicles physically joined together , could in the future a
collection of vehicles such as driverless cars virtually joined
together be classed as a train with vehicles dropping in and out as
required.

unlikely

So a "train " of vehicles leave the outskirts of London and head
North, those who want to go to a place en route such as Birmingham
break away and go there. Those who want to go to Glasgow carry on
with no stops, range and bladders allowing.

Like a train or coach.

Raise the speed limit

how will seperate section or these cars join each other at say 80+ MPH.


a bit to 80 and missing all those 5 min stops

Then not very useful just get the non stop train.

at
stations en route a normal and the journey times will become fairly
competitive with the traditional train as we know it where all on
board make no progress for a few minutes while others get on and off.

How are you going to diconnect one car from another while one slows down and the other speeds uop.


And that is before you include time getting to and from the Railway
station anyway, where you are in London that is just a few stops on a
tube but for large number of people they have to use another means of
transport to reach a railhead in the first place , and that is another
cost on top of the actual railway fare whether that is paying to park
a car or Taxi/Mini cab fare Interchanging between that and Railway
train is usually about 20 mins unless you want to risk being delayed
on the way and missing a train departure so that needs to be set
against your total door to door time as well so makes doing the whole
journey by driverless car even more favourable.

Thre's just no point in joining such cars together, what hapopens when one goes faulty, what happens when there's 2 people in the same 'car' and both work at differnt places ?