Tasmanian Consolidated Regulations
(1) A driver on a multi-lane road must drive so the drivers vehicle is completely in a marked lane, unless the driver is
(a) entering a part of the road of one kind from a part of the road of another kind (for example, moving to or from a service road, a shoulder of the road or emergency stopping lane); or
(b) entering or leaving the road; or
(c) moving from one marked lane to another marked lane; or
(d) avoiding an obstruction; or
(e) obeying a traffic control device applying to the marked lane; or
(f) permitted to drive in more than one marked lane under another provision of the Road Rules or under another law of this jurisdiction.
Penalty: Fine not exceeding 5 penalty units.
Note 1: Drivers vehicle, marked lane, multi-lane road, obstruction, service road and traffic control device are defined in the dictionary, shoulder is defined in rule 12, and emergency stopping lane is defined in rule 95.
Note 2: A driver is generally not permitted to move from one marked lane to another marked lane across a continuous line separating the lanes see rule 147.
Note 3: Rule 148 deals with giving way when moving from one marked lane to another marked lane.
Note 4: An overhead lane control device may require a driver to leave a marked lane see rule 152.
Note 5: Drivers of certain long vehicles are permitted to use 2 marked lanes when turning at an intersection see rule 28 (left turns) and rule 32 (right turns).
(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 drivers 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 one kind from a part of the road of another kind (for example, moving to or from a service road, a shoulder of the road or an emergency stopping lane); or
(c) the driver is entering or leaving the road; or
(d) the driver is moving from one line of traffic to another line of traffic; or
(e) the driver is avoiding an obstruction.
Penalty: Fine not exceeding 5 penalty units.
Note: Rule 148 deals with giving way when moving from one line of traffic to another line of traffic.