Different Road, Street, Traffic Signs – Color Matters

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The Significance of the Various Colors of Highway, Road, and Street Signs

Question: What is the difference between green highway signs and blue highway signs?

There are several colors of signs that are used on the city streets, county roads, state highways, and interstate highways throughout the US (Canada and Europe will be somewhat different, but will still have their own color codes per country).

So, rather than give you a simple answer, as usual, I’ll give you a complex answer to a simple question. Actually, I’ll give you a color coded answer with visuals so you’ll have a good understanding of how highway, road, and street signs work.

 

White Signs with Black or Red

The most common highway and road signs are white with black or red copy (mostly), with the exception of stop and yield signs. These signs are known as regulatory signs and include:

Stop signs

Yield signs

Speed limit/zone signs (Including “Reduced Speed Ahead” type signs)

Directional arrow signs (“One Way” signs fit into this sub-category)

Lane control signs (such as “Left Turn Only” signs or “Bus Lane” signs)

Passing signs (“Do Not Pass,” “Pass With Care” etc.)

Prohibitive Signs (“Do Not Enter” and “No Trucks” are examples of this type of sign)

Parking Signs (e.g. “Handicapped Parking” or “No Parking 12am to 6am”)

Restrictive Signs (e.g. “Weight Limit 20,000 Lbs”)

While this list is certainly not exhaustive, it should give you a pretty good idea of regulatory signs as you’ve seen them all you life, obey them every day (hopefully), but just weren’t aware of the significance of white.

 

Yellow Signs

The next major category is the yellow signs. Yellow signs are generally permanent warning signs that are placed in areas where there is always a reason to warn you of something, like a sharp corner. Some examples of these signs are:

Stop Ahead

Winding Road (symbol only usually)

Signal Ahead

Narrow Bridge

Lane Ends

Bump

Slippery When Wet

Slow Children

Truck Crossing

Et Cetera – there are over 200 signs in this category

Yellow or Orange Signs

In the same category, with some crossover signs which can be yellow or orange, are the temporary warning signs. These signs are used for a temporary traffic situation and include over 100 signs as well, although between the yellow and orange category, the total is just over 300 signs. These signs include:

Detour Signs

Be Prepared to Stop

Two Way Traffic

Gravel

Water Over Road

Bump

Lane Closed Ahead

Road Work Ahead

Flagger Ahead

Road Closed

Et Cetera

Yellow-Green Color Signs

A relatively small but important category of signs is the School Zone signs. These signs are now, in many area, a super reflective fluorescent yellow-green color, and signify that there are children present in the area at many times of day. These areas are often heavily patrolled by the police, so, if you don’t want a speeding ticket, these are signs you’ll really want to pay attention to. They include:

School Zone symbol

What Hours Zone Signs are in effect

End School Zone

Et Cetera

Green Signs

And (drum roll) finally, we’re getting to your question about blue versus green signs. I’ll start with green signs first. In the US, almost universally, green signs have to do with where you’re at and where you’re going. These include:

School Zone symbol

What Hours Zone Signs are in effect

End School Zone

Et Cetera

Blue Signs

The blue signs are also directional signs, but have to do more with things like hospitals or parks or fuel or lodging. These signs include:

“H” signs – for hospital

Tent symbol for camp area

Gas Pump symbol for Fueling Station

Rest Area signs

Knife/Fork/Plate symbol for Restaurant

Et Cetera

Brown Signs

Lastly, the brown signs. These signs are similar to the blue signs, but are generally pointing to recreational areas or motorist services within recreational area. The symbols are similar to the blue signs with some overlap. The symbols you’ll see on these signs include:

Bear Symbol for a bear viewing area (kind of a scary sign, really!)

Helicopter symbol for heli-pad

Dog symbol for pet rest area

Hiker symbol for hiking trail

Bed symbol for lodging

Downhill Skier symbol for an upcoming ski area

Cross Country Skier symbol for XC skiing trails

Sailboat symbol for sailing access area

Et Cetera

So, there’s your highway sign primer. It covers most of the signs used on roads, streets, highways, and interstate highways in the US, so hopefully you got not only your original question answered, but several others too!

If you want to grab your very own street sign/s, GO HERE and learn more about the specs as specified by the United States Department of Transportation.

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