What is the purpose of side marker lights?
The purpose of side marker lamps is to enable a driver to see another vehicle that is approaching at an angle at night—and to see it early enough that the driver can stop in time to prevent a collision or, at least, slow down to reduce the severity of the collision.
Do cars need side markers?
The U.S. requires all vehicles to have marker lights—amber lights mounted to the front fenders or integrated into the sides of headlight housings and red lights on the rear fenders.
Do I have to have side marker lights?
If your trailer is less than 6′ long, you don’t need to have front side marker lights or front side marker reflectors. US regulations state that if your trailer is a boat trailer, you can use dual-face lights that are yellow on one side and red on the other for the front and rear clearance lights.
What lights should you use in a tunnel?
Explanation: Before entering a tunnel, you should switch on your dipped headlights, as this will allow you to see and be seen. In many tunnels, it’s a legal requirement. Don’t wear sunglasses while driving in a tunnel. You may wish to tune your radio to a local channel for traffic information.
Are you allowed to overtake in a tunnel?
Is it possible to overtake in a tunnel? It is forbidden to overtake in a tunnel or underpass if there is only one lane in each direction.
What are the blue lights in a tunnel for?
While street traffic signals usually go from green to yellow to red, subway signals usually go from red to yellow to green…. “ Blue lights probably indicate locations of emergency phones, but could be something else.
Why do some police cars only have blue lights?
Over time, police cars and other emergency vehicles began to use flashing emergency lights. In these situations, blue lights really stand out and help to alert other drivers. Others point to studies that indicate that red lights may be more visible during the day, while blue lights may be more visible at night.
When can police use blue lights?
Blue lights alone may be used to secure the site of an accident (or a standing emergency vehicle). Sometimes, columns of emergency or police vehicles use blue lights (without the two-tone horns) to make the column more visible to other vehicles.
What vehicle uses blue flashing lights?
Emergency vehicles use blue flashing lights. If you see or hear one, move out of its way as soon as it’s safe and legal to do so. As well as police, fire and ambulance, you will see blue lights on vehicles for bomb disposal, coastguard, mine rescue, organ transplant and mountain rescue.