(A) Main-traveled or through streets may be designated as such by erecting at the entrance thereto from intersecting streets signs notifying drivers of vehicles to stop or yield the right-of-way to drivers of vehicles approaching the intersection on the main-traveled or through street.
(B) Whenever a stop sign has been erected, it shall be an infraction for the driver of a vehicle to fail to stop such vehicle before entering or crossing the main-traveled street or through street, in obedience to such stop sign.
(C) Whenever a yield right-of-way sign has been erected, it shall be an infraction for the driver of any vehicle to enter or cross such main-traveled or through street, unless such driver shall first slow down and yield the right-of-way to any vehicle in movement on the main-traveled or through street which is approaching so as to arrive at the intersection at approximately the same time as the vehicle entering the main-traveled or through street.