Spotted this tweet today and copied the info about the PG9. Idiot

https://twitter.com/DerbyshireRPU/status/814510095191212032


Roadworthiness prohibition (PG9)

This is given for mechanical problems or for the condition of a vehicle’s bodywork and equipment. It could have an immediate or delayed effect depending on how severe the defect is.

DVSA has published a list of defects explaining whether immediate or delayed prohibitions are issued.
‘S’ marked roadworthiness prohibition

This is given when the examiner believes a severe defect is due to significant breakdown in the vehicle’s maintenance procedures.

You wouldn’t get this type of prohibition for defects you can’t have known about before your journey, eg:

a problem that could have occurred during the journey
a problem you couldn’t reasonably have been expected to have noticed (eg an underside defect)

You could get an ‘S’ marked prohibition if the examiner believes there’s been a significant breakdown in the maintenance procedures agreed as part of the operator’s licence.

The prohibition can start immediately and you or the operator could be prosecuted. DVSA will follow up with an assessment of the operator’s maintenance procedures.
Variation of roadworthiness prohibition

You could get this if an immediate problem with your vehicle has been temporarily or permanently fixed at the roadside but others remain.

It means you can return to your operating centre or garage to permanently repair the initial problem and other faults. LL.B (Hons) - University of Derby
LOT (Lord of Time) - University of Gallifrey