What is special about Garrett Morgan?

Garrett Augustus Morgan, Sr. (March 4, 1877 – July 27, 1963) was an African-American inventor, businessman, and community leader. His most notable inventions were a three-position traffic signal and a smoke hood (a predecessor to the gas mask) notably used in a 1916 tunnel construction disaster rescue.

How many traffic lights are there in the world?

According to the United States Access Board, more than 300,000. As a general rule of how they should be placed, the organization recommends there be one signalized intersection per 1,000 in population. If the United States has 300,000 traffic lights, the global total is well into the millions.

What do blue traffic lights mean?

The main purpose of the blue lights is to help law enforcement officers catch motorists running a red light in a more efficient and safe manner. The blue lights come on when the signal turns red so officers can see the blue light and what vehicle has entered the intersection while in their squad vehicle at a distance.

What do white flashing lights mean?

If you see a white flashing light, the police may be using it as a warning but are more likely to be trying to identify a particular vehicle or to illuminate your vehicle or one in your vicinity, and you do not need to stop or pull over unless they use their tactical blue and red lights.

What is the green light on my car?

Yellow or amber lights often indicate a lower-grade hazard or warning, such as the activation of the traction control system when driving on slippery roads. Green and blue lights simply indicate that a feature is engaged, such as the headlights or cruise control.

What color are warning lights on cars?

Your dashboard likely displays warnings in three colors: red, yellow or orange, and green or blue. A red warning light is usually a sign of an immediate problem that needs your attention right away. In some cases, it might not be safe to keep driving if you see a red warning light.

What do yellow flashing lights on a police car mean?

use caution

What does it mean when a cop has lights but no siren?

Keith recently asked, “Why do I see some emergency vehicles traveling in communities with lights on, but no siren?” They usually aren’t in contact with heavy traffic and will shut their sirens off to not disturb the community or draw unneeded attention to their situation.”

What does flashing lights but no sirens mean?

Generally, when the lights are on but the siren is not activated, the crew is just tired of hearing the noise and only using the siren at intersections.

What does the white light on a cop car mean?

Red lights signify an immediate emergency. Blue lights define police presence and can be spotted easily from a great distance. White lights are used by night-shift officers to brighten dark areas or to shine on suspects who are traveling on foot or being interviewed.

Why do cops flash their lights at you?

When a police officer in patrol is seeing you’re speeding lightly (not doing 150 in a 90 zone, but more like 110 in a 90 zone), but for various reasons, decides not to pull you over, he will either ignore it, or simply flash briefly his lights to tell you to slow down.

Are white flashing lights legal?

Another section of the vehicle code says flashing lights are prohibited on vehicles. Said Jim-the-California-Bicycle-Coalition-Man: “Flashing bike headlights are neither specifically authorized nor specifically prohibited under state law.