On 18/1/19 3:00 pm, Dudley Horscroft wrote:
> Alternative calculation.

>

> 20 trains at 4 minute headway means 80 minutes for the circuit till

> the first train starts again.  Total distance = 72 km, hence an

> average speed of 72 times 60 divided by 80 is required.  This is 54

> km/h.   = 33.6 mph.

>

With the way Sydney commuters meander on and off trains, the metro may
be hard up to maintain an average speed of even 50km/hr.

The doors will be shutting on people or being deliberately held open to
increase the dwell time 'so mates can get on'.

The control room operators will have their work cut out for them.