V podstate skoro všetky štáty majú legislatívu postavenú podľa Viedenského dohovoru, tam je k tomu nasledovné:

of vehicles moving slowly shall use that lane.
ARTICLE 11
Overtaking and movement of traffic in lines
1. (a) Drivers overtaking shall do so on the side opposite to that appropriate to the direction of traffic.
(b) However drivers shall overtake on the side appropriate to the direction of traffic if the driver to be overtaken has signalled his intention to turn to the side of the carriageway opposite to that appropriate to the direction of traffic and has moved his vehicle or animals over towards that side in order to turn to that side for the purpose of taking another road, to enter a property bordering on the road, or to stop on that side.

Domestic legislation may authorize cyclists and moped riders to pass stationary vehicles or vehicles moving at a low speed other than cycles or mopeds on the side which corresponds to the direction of traffic provided that sufficient space is available.

a

1. Any driver wishing to perform a manoeuvre such as pulling out of or into a line of parked vehicles, moving over to the right or to the left on the carriageway, or turning left or right into another road or into a property bordering on the road, shall first make sure that he can do so without risk of endangering other road-users travelling behind or ahead of him or about to pass him, having regard to their position, direction and speed.

Takže nie, predchádzať vozidlo signalizujúce odbočnie je možné len v opačnom smere. Na celom poondiatom svete a z logiky veci.