146Driving within single marked lane or line of traffic

146 Driving within single marked lane or line of traffic (1) A driver on a multi-lane road must drive so the driver’s vehicle is completely in a marked lane, unless the driver is— (a) entering a part of the road of 1 kind from a part of the road of a shoulder of the road); or (b) entering or leaving the road; or (c) moving from 1 marked lane to another marked lane; or (d) avoiding an obstruction; or (e) obeying a traffic control device applying to the marked lane; or (ea) lane filtering in accordance with section 151A; or (f) permitted to drive in more than 1 marked lane under another provision of this regulation. (2) A driver on a road with 2 or more lines of traffic travelling in the same direction as the driver, but without marked lanes, must drive so the driver’s vehicle is completely in a single line of traffic unless— (a) it is not practicable to drive completely in a single line of traffic; or (b) the driver is entering a part of the road of 1 kind from a part of the road of another kind (for example, moving to or from a service road or a shoulder of the road); or

(c) the driver is entering or leaving the road; or (d) the driver is moving from 1 line of traffic to another line of traffic; or (e) the driver is avoiding an obstruction; or (f) the driver is lane filtering in accordance with section 151A.