Rant!!!

[Grant]

From what i can gather from wikipedia blue lights allow special exceptions to some emergency services. Such as going the wrong side of a keep left sign, or treating red lights as give way markers. It does say on wikipedia that lights are allowed to be used when traveling to an emergency or stopped at an emergency response site. Dont know if this is much to go by?

Blue flashing lights must only be lit at the scene of an emergency, or when the driver considers it desirable to indicate that the journey being undertaken is urgent,[27] and (in terms of the law) convey to other drivers that they should take special care.[28]

Although not specifically linked to the use of warning beacons, the police, fire brigade and ambulance services (and in certain cases, the blood services and bomb disposal units, but not the other emergency services listed above) may also choose to allow their drivers to claim legal exemptions from certain motoring regulations, such as being able to treat a red traffic light as a give way sign,[29] exceeding the speed limit,[30] passing the wrong side of a keep left/right sign,[31] driving in a bus lane,[32] or parking in restricted areas.[33] They may not, however, ignore "no entry" signs, drive the wrong way down a one-way street or cross a solid white line in the middle of the road (other than the same exceptions granted everyone else, for example to pass a stationary vehicle). In reality some drivers will disobey other laws at their professional judgement but they do so without any automatic protection from the law.[34] Some services, such as HM coastguard do not allow all their staff to claim all the exemptions available to them.[citation needed]