Health 4 Signs and Warnings

7/25/2019 Health 4 Signs and Warnings

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Traffic Signs

The general principle of traffic signs is to make amessage known quickly, (70mph) accurately,with minimum reading skills required.

This should allow traffic to meet the goal of theHTS. Safe, rapid, and efficient transportation.

oor signs, signal, and traffic markings can leadto a !reak down in the system.

They are recogni"a!le !y shape and color,message and diagram.


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There are three types

(classifications) of traffic signs

They are regulatory

#arning

and guide.


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$egulatory signs

%. Stop signs. Stop signs are red octagons and mean come to a complete stop.They are the only sign so shaped. &asily recogni"ed at a distance.

'. ield signs. ield signs are red and triangular. This sign requires a drier toallow other driers first use of the road.

*. Speed limit signs. Speed limit signs are white with !lack lettering. They are

also ertical rectangles. They can also !e orange. + construction speed limitis a regulatory sign as well. There can !e minimum speed limits too. These arenormally found on interstate highways.+lthough there could !e minimum speed limits elsewhere, they must first !eposted !y the highway department.

. -ther regulatory signs also include /o not enter, one way, no passing, no leftor turn. These are com!inations of white, !lack and1or red.


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#arning signs

#arning signs are information to warn driers of ha"ardsthey are a!out to encounter.

They are usually yellow and diamond shaped. There aremessages to help driers understand these ha"ards.

+lthough these are not regulatory signs, not heeding thewarning may result in an accident and1or a citation fordriing too fast for e2isting conditions.

There are seeral other shapes used for warning signs.School "one warning signs are a pentagon. $ailroad

warning signs are round. 3o passing signs are a pennant shaped sign and areplaced at the !eginning of the no passing "one and onthe left side of the road to make them isi!le to drierstrying to pass.


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4uide signs

4uide signs. 4uide signs are used to

inform driers of routes, gas, food,

lodging, hospitals, rest areas and others.

4uide signs are designated

!y color and shape.


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5lue is motorist serices. 4as,

food, lodging, hospitals etc.


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5rown is for recreational areas.


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The 5asic Speed 6aw

The 5asic Speed law requires that a drieralways drie at a speed safe for e2isting

conditions. + drier may !e sighted for

speeding when traffic, roadways, or

weather conditions are not ideal.


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There are no a!soluteright of

ways in traffic


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$ight of #ay 6aw

&ach law is written descri!ing which

drier yieldsright of way.

8or e2ample the person on the left yieldsto the

person on the right. The turning drier yieldstothe drier going straight. The person entering

traffic yieldsto those in traffic.

3o one, including emergency ehicles, has

a!solute right of way. ou are required to yieldto

them.


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The Highway Transportation

System. (HTS)

The goal of the HTS is to proide safe,

rapid, and efficienttransportation of

persons and goods from one location to

another, in an enironmentally soundfashion.


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There are at least fie types of

traffic light systems a. rogressielights are set up so that traffic moing at the correct speed

will !e a!le to keep moing as the lights change in sequence.!. Traffic actiatedlights are designed to change according to traffic loads.3o traffic, no green light, many ehicles, longer green lights. The key toefficient use of these lights is to know what and how each intersection is setup. The use of computer assisted traffic lights are also traffic actiated. They

try to anticipate the traffic coming, not react to traffic that has 9ust stopped.c. Timedlights are the least e2pensie and therefore used in many smallercommunities. They are set for so many seconds green for each direction oftraffic.d. edestrianactiated lights are used at cross walks to aid their crossing of!usy streets.e. $ailroadgrade crossing lights are used to warn driers of trains in closepro2imity to the crossing.


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H+T:


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Three colors used in traffic lights

a. $edis always stop. ;f it is flashing red, youmay go as if a stop sign. + solid red you might!e allowed to turn under certain circumstances.!. 4reenmeans you may go, if safe to do so.

There is no right of way gien !y a green light.c. ellowis used for caution, !ut it is a clearancelight. ou may clear an intersection if the light isyellow, !ut you are not allowed to enter anintersection once the light has changed toyellow.


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$ight Turn on $ed

/riers in all


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6eft Turn on $ed:

There is no left turn on red in 3=. >any

states do hae one. + left on red law has

!een introduced in the 3= legislature

seeral times !ut is opposed !y theisually impaired lo!!y.


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>ulti?use Traffic 6anes

;n larger cities, the use of reersi!le lanes

increases the capacity of the e2isting

streets.

=enter lanes are reersed to allow heay

traffic, in one direction or the other,

to hae more lanes.

These lanes are marked with a greenarrow or a red @ a!oe the

lane.


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aement >arkings

aement markings, like signs and

signals, are designed to moe traffic

safely, rapidly, and efficiently.

>arkings therefore, should communicate

a simple, clear message for all highway

users.


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=olor has meaningA

4enerally, yellow traffic markings are used

to separate traffic traeling in opposite

directions. #hite lines are for marking

sides of roadways, crosswalks, warningsand to separate traffic traeling in the

same direction.


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6eft turn lanes

ellow is two way traffic

;n one laneA


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The horses were a 9okeB.

6eft turn lanes are usually yellow lines showing

two?way traffic, and are used for

e2itingtraffic.

+t intersections, the left side of the lane may !edou!le yellow while the right side is !roken

white. This means that this lane is one way for

crossing the white lines.

+t no timeis a drier supposed to pull into this

left turn lane to enterthe traffic flow or to pass

another ehicle.


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School !uses and the left turn lane.

-n a fielane street with a left turn lane,you do not hae to stop for the school !uson the opposite which is stopped and

unloading children. The left turn lane is defined as a physical

!arrier.

The !us is 3-T allowed to dischargechildren which would hae to cross thefie lanes.


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6ane choice

/riers should choose a traffic lane with

fewest conflicts. Traeling in the right

hand lane is a courtesy in 3= unless

passing or turning left.

;n heay traffic either lane is legal.


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crosswalks

#hite crosswalks are marked in seeraldifferent ways.

#ho yields right of way depends on traffic

lights and the type of marking. Standardcrosswalks with two lines, depend onstreets and lights. 5old markings are usedfor increased isi!ility.

Ce!ra markings are to tell driers to yield.


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edestrians are still required too!ey traffic lightsA


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Handicapped

5lue paement markings are used for

handicapped parking.


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H-D lanes (High -ccupancy Dehicles) are

used in large cities to encourage car

pooling. 4enerally they are the left lane(s)marked with a white diamond and require

at least two or three occupants.


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&ntrance1e2it ramps

There are many types of interchanges

used in traffic.

The cloerleaf, the trumpet, the weae.

The !iggest pro!lems come from non?

traditional e2change. + left e2it from a

freeway for e2ample. -r going right off

the freeway to go left.

5e ready for the unusual.


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This dou!le white line has the


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This dou!le white line has the

same restriction as a dou!le yellow

line. Then what is the difference:


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#hatEs the deal here:

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Health 4 Signs and Warnings