NTA

1) National type approval. Euro-wide scheme to approve vehicles and components.

NPV

1) Net present value. The outcome of discounted cash flow (DCF) projections. Provides an accurate assessment of the whole life cost of an asset at today's prices/values.

Notional gross weight

1) When necessary to determine maximum gross weights for vehicles/trailers which do not have plated weights (for driving licence purposes) a multiplier is used to convert the ulw to a notional gvw.

Notification to highway and bridge authorities

1) Necessary notification when vehicles carrying heavy loads (ie exceeding 80,000 kg [five days' prior notice] or when weight on axles exceeds C&U regulations limit [two days' prior notice]) to authority for every district through which vehicle is to pass. See also Police notification.

Notice of intended prosecution

1) Notice given/sent by police to offender to notify their intention of prosecuting. Not always necessary if offender was warned at the time of likely proceedings; or at that time or immediately after the offence an accident occurred; or a summons to appear in Court is sent within 14 days of the offence.

'Norbert'

1) A heavy vehicle belonging to and painted in the colours of major French road haulier Norbert Dentressangle as identified by lorry spotters on journeys. See also 'Eddie'.