No, Flashing your headlight's will have no effect on a traffic signal. The reason a traffic signal changes for emergency vehicles that have the lights flashing, is, they have a special transmitter that tells the light to change. This transmitter is connected to the emergency lights so it comes on when the lights are used.
This is called a "stale green" signal. It is about to change to amber. This is also recognized at some intersections by the flashing crosswalk signal informing pedestrians not to cross.
You must stop
A red light - steady or flashing - means STOP. A steady amber light means Caution - signal about to change. A flashing amber light means SLOW DOWN.
In the U.S.A it means you have the right of way but proceed with caution.
It means you should slow down and be prepared to stop if necessary. "Slow down and cross the intersection carefully."
The horn, The signal lights, The brake lights, The back up lights, Flashing the high beam headlights,
It means you should slow down and be prepared to stop if necessary. "Slow down and cross the intersection carefully."
Do the thingy where you turn the dial on the signal thing.
you stop - look in all directions - and proceed if clear of opposing traffic.
When you see flashing red lights at a 4-way stop Light instead of normal traffic signals you should approach the intersection as if it was a 4-way stop sign, alternating N/S and E/W lanes proceeding through the intersection, one car at a time. Typically this type of situation happens when the traffic signal system is malfunctioning.
In some cities, they'll be equipped with a special flashing light or radio transmitting equipment) that will be picked up by a sensor on that traffic signal, and cause it to change. However, not all ambulances have this capability.
means nothing Wrong! It means caution. Something requires extra attention. At an intersection, a flashing circular yellow means to take extra caution, and watch for traffic on the cross road (which has a flashing red light). A flashing red light is the same as a stop sign. A flashing yellow arrow means you ma turn in the direction of the arrow, but you must yield to conflicting traffic. If the flashing yellow light is not at an intersection, it either calls attention to a road hazard on an accompanying sign, or indicates that a special regulation indicated on the sign is in effect (School speed limit 20 when flashing).