Article 4U.K.Roadside checks
1.Roadside checks shall be organised in various places and at any time and shall cover a sufficiently extensive part of the road network to make it difficult to avoid checkpoints.
2.Member States shall ensure that:
(a)sufficient provision is made for checkpoints on or nearby existing and planned roads and, if necessary, that service stations and other safe locations along motorways can function as checkpoints;
(b)checks are carried out following a random rotation system, with an appropriate geographical balance.
3.The points to be verified at roadside checks are set out in Part A of Annex I. Checks may focus on a specific point if the situation so requires.
4.Without prejudice to Article 9(2), roadside checks shall be carried out without discrimination. In particular, enforcement officers shall not discriminate on any of the following grounds:
(a)country of registration of vehicle;
(b)country of residence of driver;
(c)country of establishment of undertaking;
(d)origin and destination of journey;
(e)type of tachograph: analogue or digital.
5.Enforcement officers shall be provided with:
(a)a list of the principal points to be checked, as set out in Part A of Annex I;
(b)standard checking equipment, as set out in Annex II.
6.If, in a Member State, the findings of a roadside check on the driver of a vehicle registered in another Member State afford grounds for believing that infringements have been committed which cannot be established during the check owing to a lack of necessary data, the competent authorities of the Member States concerned shall assist each other in clarifying the situation.