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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Procedure for drivers carrying out 10,000-mile tests in France, following an accident with car 15-EX.

Identifier  Morton\M10\  img060
Date  13th April 1928
  
74199

To BJ. from Hs.{Lord Ernest Hives - Chair}

Hs{Lord Ernest Hives - Chair}2/LG13.4.28.

ACCIDENT TO 15-EX. 78940L

Replying to BJ4/E11.4.28. The procedure as
regards the drivers carrying out 10,000 miles tests in France
is as follows :-

Whenever the car is on the road there are
always two expert drivers with it. They are supposed to work
the same number of hours per day as we do at the Works i.e.
8 1/2 hours. During that time the car is expected to cover 250
miles. This means that each driver is expected to drive the
car for 125 miles during 8 1/2 hrs., but he is actually on the
car for 250 miles. Never, at any time, has it been laid down
that this mileage must be run off irrespective of road conditions.
There have been a number of cases, due to fog and tyre troubles,
when the mileage has not been completed.

The driving of experimental test cars at
Chateauroux has now become w quite a standardised job. When
the car is running with two shifts and completing 500 miles
per day, practically the same roads are covered every day.
There are three triangular circuits out of Chateauroux which
are used for the tests; the drivers themselves decide which one
they take. We know now exactly how long the runs should take
and we expect a reasonable excuse from the drivers if they do
not run up to time.

We have now run approximately 150,000 miles from
Chateauroux - during that time there has been one accident;
contd :-
  
  


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