If during straddle driving in any of the driving lanes there is an obstacle of road traffic, driver of the vehicle driving in the free driving lane is obliged to enable
a) the driver of the first vehicle in the driving lane where the obstacle is, its bypassing, if he gives sign on change of driving direction,
b) the drivers of all vehicles in the driving lane where the obstacle of road traffic is, its bypassing,
c) its bypassing only by drivers of vehicles of regular public transportation.
