I have posted this lot before...
Dft guidelines do not allow detection in opposite direction on duel c/way or motorway. section 3.2.1
d
Quote:
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sites can be multi-directional and enforcement is permitted in any direction
within the site (with the exception of motorways and dual carriageways
without junctions in the site, where each direction is a separate site).
multiple housings or mobile enforcement points are allowed within the
approved site but a vehicle detected speeding by more than one camera at
a site is to be regarded as a single offence
where multiple housings are used, the number of housings must not exceed
the number approved in the operational case
at fixed camera sites, mobile enforcement may also take place within the site.
http://www.dft.gov.uk/stellent/groups/d ... 032652.pdf Quote:
Acpo code of practice insist on the camera van being within 10 feet of the carriageway
The hand-held laser will only record the true speed if it is directed along the
path of the target vehicle. The vehicle may be either approaching or receding.
If the laser is positioned at an angle to the path of the target vehicle, the
displayed speed is less than its actual speed. This reduction in speed is
proportional to the cosine of the angle.
The angular effect or cosine error is always in favour of the target vehicle,
whether the device is operated in the horizontal or vertical plane.
When operating hand-held devices from the roadside the operator should be within 10 feet of the edge of the carriageway and beyond the minimum operating range (i.e. 50 feet).
When operating hand-held devices from an overbridge, the operator must
stand where possible over the centre of the carriageway being checked. In
respect of minimum range, the operator must carry out a height check from
the level of operation to the road surface directly below then multiply this by
a factor of ten. This figure becomes the minimum distance for operation.
Health and Safety. Never point a laser speedmeter at a civil or military
aircraft, vessel or armoured vehicle. Many military aircraft, vehicles or
vessels have target acquisition detectors, some of which can initiate
automatic counter measures.
© ACPO 2004 Version 2.3 Page 66/67 of 110
and the home office scientific development bureau who gave type approval insist that the type approval is subject to ACPO code of practice being followed.
http://scienceandresearch.homeoffice.go ... iew=BinaryThis is also confirmed by a letter I got from home office minister Paul Goggins
The minister wrote
Quote:
Quote:
Requirements for The day to day operation of enforcement devices have been laid down in the publication “Roads Policing Enforcement Technology Code of Practice(p67)” issued by ACPO. A copy is on their website:
www.acpo.police.uk under policies.
(non day-to-day opperation is defined as sites ie:where street racing is ocuring and covert detection must be recorded in a log)Section 14.4 of the code of practice requires the operator to act within 10 feet of the carriage way and at a range exceeding 50 feet. It says it is important that the beam is held steady on the target area to avoid any slip factor.
I interpret this to mean that the ACPO code of practice must be followed in day to day operation. Other parts of the letter state that HOSDB only tested under these conditions to give the device its type approval.
To clear up a bit of confusion: I interpret "the carriageway" to be "the carriageway" you are driving on. not the lane you are driving in.
A duel carriage way is "two carriageways" east bound carriageway and a west bound carriageway.
This is how the equipment was type approved and the code of practice laid down, The government minister is relying on these procedures being followed. There must have been a good reason for these rules being published
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Speed limit sign radio interview. TV
Snap Unhappy“It has never been the rule in this country – I hope it never will be - that suspected criminal offences must automatically be the subject of prosecution” He added that there should be a prosecution: “wherever it appears that the offence or the circumstances of its commission is or are of such a character that a prosecution in respect thereof is required in the public interest”
This approach has been endorsed by Attorney General ever since 1951. CPS Code