"John Rowland" wrote in message
...

A slip road with "No entry" signs on both ends has been created in W2 to
allow emergency vehicles to get from Westbourne Terrace Road to Westbourne
Terrace. How do drivers of emergency vehicles find out about the
infrastructure which is there for them? Are new ambulance drivers given a
graffitied A-Z, or a modified satnav, or just a list?

London Ambulances all have a bespoke SatNav system fitted, i.e. it's not a
standard off-the-shelf job. I guess they must still buy the mapping data
from somewhere, so couldn't answer about how these things get into the
system. Maybe I'll ask when I'm next talking to their techy folk.