This sign is used on multiple lane highways to advise slower driving traffic to stay in the right hand lane; and also to do so when approached from behind by other traffic even if you are doing the speed limit.

If your car stalls on the tracks don't hesitate. Get yourself and your passengers out and away from the car immediately. If a collision is imminent, the safest direction is toward the train but stay off the tracks. That way you will be least likely to be hit by your vehicle or any debris from the collision.

Respirators are a type of personal protective equipment (PPE) worn on the face. They remove contaminants from the air using cartridges, filters or canisters. It is important to know which respirator type, certification and replacement cartridges you may need before you begin your project. Whether you’re taking on a major paint job, dealing with potentially dangerous chemicals like lead or doing daily tasks like sanding and woodworking, choosing the right type of mask will help you breathe easy.

Barricades, vertical panels, drums, and cones are the most commonly used devices to alert drivers of unusual or potentially dangerous conditions in highway and street work zones. These devices are used to guide the drivers safely through the work area, and at night, they may be equipped with warning lights. When a Road Closed sign is displayed, do not drive on this road. Look for a detour or another route.

There are eight shapes and eight colors of traffic signs. Each shape and each color has an exact meaning, so you must acquaint yourself with all of them.

Yellowroadsignsand meanings

Any pedestrian or person driving a vehicle and approaching a railroad highway grade crossing must stop within 50 feet but not less than 15 feet from the nearest rail of the the railroad when the electrical or mechanical warning devices are flashing, the crossing gate is lowered, a human flagger is warning of an approaching train, or an approaching train is clearly visible and is in close proximity to the railroad highway grade crossing. Do not proceed until you can do so safely.

Various traffic control devices are used in road construction and maintenance work areas to direct drivers and pedestrians safely through the work site and to provide for the safety of highway workers. Be prepared to reduce your speed and use caution when directed to do so by a sign, flagger and/or police officer.

Pavement markings, consisting of an RXR followed by a stop line closer to the tracks, may be painted on the paved approach to a crossing. Any person walking or driving a vehicle must stop within 50 feet but not less than 15 feet of the crossing. Stay behind the stop line while waiting for a train to pass.

White and yellow lines are used along pavement edges and between lanes to keep vehicles in line. These lines may be solid or broken (long dashes), single or double.

This sign lists the maximum recommended safe speed for an entrance or exit on an expressway. Slow down to whatever speed is shown.

You must never drive in a lane under a red X. A yellow X means that your lane signal is going to change to red. Prepare to leave the lane safely. You may drive in lanes beneath the green arrow, but you must also obey all other signs and signals.

Paper dust masks are designed to reduce exposure to solid particles like dirt, silica and pollen. Dust masks are not National Institute for Occupational Safety and Health (NIOSH)-approved disposable filtering facepieces. Dust masks are not true respirators and do not offer protection against hazardous dust, gases or vapors. If the dust mask does not have a valve in the front and is made of paper instead of non-woven polypropylene fiber, it’s not a respirator. These simple masks can be worn during activities like mowing, gardening, sweeping and dusting.

Flashing arrow panels are used both during the day and at night to give advance warning and directional information to drivers where it is necessary to move to the right or to the left into another lane.

Be sure to determine what type of filter you will need for your project before purchasing. Most cartridges follow OSHA's color coding system as outlined below:

At the intersection ahead traffic in left lane must turn left and traffic in adjoining lane may turn left or continue straight ahead.

SLOW MOVING VEHICLE Vehicles going less than 25 miles per hour (such as farm equipment) must display this sign on the rear when using public highways.

Yellowtriangle road sign

Basic dust masks and one-time use respirators for things like lead abatement are simple to use. The packaging will typically indicate what these respirators are for, and they do not require replacement cartridges. More powerful half-mask respirators and full-face respirators are often fitted with removable, replaceable cartridges to provide the required protection. Most models will tell you what they’re designed for right on the packaging, but a color-coded system implemented by OSHA makes finding the right cartridge simple.

Unlike regular masks, respirators are rated by NIOSH, the National Institute for Occupational Safety and Health, a division of the Centers for Disease Control (CDC). Respirators are classified as N (Not Oil Resistant), R (Oil Resistant), or P (Oil Proof), and the associated number (95, 99, 100) represents the percentage of airborne particles that mask is able to remove fom the air.

The lane marking arrow, in the center lane in the diagram below, indicates that traffic in this lane can be reversed in accordance with local traffic controls due to "rush hour" traffic or other special traffic conditions.

The Home Depot carries an assortment of PPE equipment. Get the right protective gear to get your project done safely. Use The Home Depot mobile app to order what you need for delivery or curbside pickup, or to find products fast with image search.

Two-way roadway with a center lane for left turns in either direction of travel. The specially marked center turn lane is intended for slowing down and for sheltering of turning vehicles and may not be used for passing.

Yellow Signs

There are also combination cartridges and solutions if your project involves exposure to both acid gases and organic vapors.

True respirator masks such as N95 respirators are designed to protect the wearer from airborne particles and from liquid contaminating the face. They filter at least 95 percent of airborne particles such as dust, mists and fumes. These masks are approved by NIOSH because they effectively block out particulates down to .3 microns and large droplets won’t pass through the barrier. N95 respirators do not protect against oil-based particles.

At many highway-rail crossings, the crossbuck has flashing red lights and bells. When the lights begin to flash, stop! A train is approaching. DO NOT STOP ON THE TRACKS OR WITHIN SIX FEET OF EITHER RAIL. Do not move forward until you can do so safely. If there is more than one track, make sure all tracks are clear before crossing. In heavy traffic make sure there is room for your vehicle on the other side before starting to cross.

DMV roadsignsand meanings

OCTAGON: Exclusively for stop signs. HORIZONTAL RECTANGLE: Generally for guide signs. TRIANGLE: Exclusively for yield signs. PENNANT: Advance warning of no passing zones.

It is a common misconception that respirators and masks provide the same type of protection. Respirators can help protect you while you breathe in by filtering out small and even microscopic particles in the air, whereas cloth and single use masks are more about protecting those around you from large particle droplets as you breathe out, cough or sneeze.

Come to a complete stop at the marked stop line or before moving into the crosswalk or intersection. After stopping, you may turn right on red at most intersections if the way is clear. Some intersections display a "NO TURN ON RED" sign, which you must obey. Left turns on red from a one-way street into a one-way street are also allowed.

A diamond-shaped marking shows that a lane is reserved for certain purposes or certain vehicles. The lanes are usually reserved for buses or car-pool vehicles during rush hour traffic. Other diamond signs are used to designate bicycle lanes.

A flashing red light means the same thing as a stop sign. It is used at dangerous intersections. A flashing yellow light means you may move forward with caution. It is used at or just before dangerous intersections, or to alert you to a warning sign such as a school crossing or sharp curve.

Stop signs are always octagonal (8 sided). A stop sign means that you must bring your vehicle to a complete halt at the marked stop line.

Construction and maintenance signs are used to notify drivers of unusual or potentially dangerous conditions in or near work areas. Most signs used in highway and street work areas are diamond shaped.

The type of replacement cartridge and filter you need largely depends on your particular working environment and individual requirements. There are four aspects to consider when purchasing respirator cartridges and filters: exposure to Airborne Particles, Organic Vapors vs. Nuisance Level Organic Vapors and Acid Gases.

Lines, symbols and words are often painted on a roadway to help direct drivers and control traffic flow. You must know what the different lines and colors mean and obey them as you would traffic signs or signals.

Orangestreet signs

Narrow bridge. These signs warn you of special conditions or dangers ahead. Words or symbols on the sign will show why you need to use caution. See pages 58-60 for typical warning signs.

Stop if you can. The light will soon be red. The yellow arrow means the same as the yellow light, but applies only to movement in the direction of the arrow.

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Still confused about which respirator might fit you? Try a size medium respirator first. About 80 percent of the adult population can effectively wear a medium respirator.

Traffic signals are placed at intersections to keep traffic moving and avoid accidents. Drivers, pedestrians, and bicycle riders must obey these signals except when an officer is directing traffic. Stop on the stop line if your car is nearest the signal. Some signals change only when a car is at the stop line. If traffic signals are out of order, stop as you would for a four-way stop sign.

Blue and white signs direct you to services, such as gas, food, motels and hospitals. Brown and white signs point out scenic areas and parks.

R Ratings = Oil Resistant: For protection against dust, mists, fumes and occasional oil particle exposure. When using R-rated filters in oil-filled environments, you should only use the respirator for 8 hours at a time. Examples of oil particles include lubricants, cutting fluids, glycerine, some pesticides and some solvents.

A green arrow, pointing right or left, means you may make a turn in the direction of the arrow. If the red light is burning at the same time, you must be in the proper lane for such a turn, and you must yield the right-of-way to vehicles and pedestrians within the intersection.

Some highways have reversible traffic lanes to help handle rush-hour traffic. The direction of traffic is normally reversed at set times each day. These pavement markings are used along with special lane signals and other signs and symbols.

As you approach this sign, slow down, watch for children crossing the road. Stop if necessary. Obey signals from any crossing guards.

Trains cannot stop quickly. An average freight train traveling at 30 MPH needs a stopping distance of more than half a mile. Longer trains moving at faster speeds can take one and a half miles or more to stop.

Road signyellowcolor code

Slow down and give vehicles crossing your path the right-of-way. If the way is clear, you may move forward slowly without stopping. Yield signs are usually placed where auxiliary roads lead into major roads.

Red roadsigns

Contrary to masks, respirators are tested and approved by the National Institute for Occupational Safety and Health (NIOSH), a division of the Centers for Disease Control. For NIOSH to approve a respirator, it must be able to capture and filter particles of varying sizes, including those so small you can't see them (like viruses and bacteria). Unlike cloth masks or surgical masks, respirators feature a tight seal to the face, and are made of a specially woven and statically charged fabric that filters 95 to 99.7 percent of all air particles as you breathe.

Crossbuck signs are found at highway-rail intersections. They are yield signs. You are legally required to yield the right of way to trains. Slow down, look and listen for a train, and stop if a train approaches. When the road crosses over more than one set of tracks, a sign below the crossbuck will indicate the number of tracks.

Yellow lane lines separate lanes of traffic moving in opposite directions. Single yellow lines may also mark the left edge of the pavement on divided highways and one-way streets.

Masks have now become a more common, everyday item. They are useful in preventing the spread of disease, as well as helping with allergies and respiratory issues. You may have never heard the term "respirator" or "N95" before, or thought about how it works or differs from other types of face masks. But, there are some major differences to know.

The advance warning sign is usually the first sign you see when approaching a highway-rail intersection. The advance warning sign advises you to slow down, look, and listen for a train, and be prepared to stop if a train is approaching.

Always approach highway-railroad crossings at a reasonable speed — and be prepared to stop if you have to. Be especially alert when you are following buses or trucks which may have to stop at highway-railroad crossings even if any gates are up and the warning lights are not flashing.

Simple cloth face masks and coverings do not form a tight seal around your mouth and nose, limiting their ability to protect you from germs that may be in the air, since particles can leak in around the edges. However, these masks still help to slow the spread of airborne viruses because they offer a barrier that helps keep germs and large particle droplets from reaching other people as you talk, cough or sneeze.

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GREEN GUIDE SIGNS Green and white signs give information about directions and distances. Guide signs on expressways show you which lanes to use to get where you want to go. Routes that run generally East-West have even numbers and those running North-South have odd numbers.

If there is no marked stop line, stop before entering the crosswalk on the near side of the intersection. If there is no crosswalk, stop at a point nearest the intersecting roadway where you have a clear view of approaching traffic on the intersecting roadway before entering the intersection.

If you experience any of the 3D's (Dirty, Damaged, Difficult to Breathe Through) while using your respirator, go to a non-contaminated area and replace the respirator (if disposable) or change the filters (if reusable).

White roadsigns

There are many types of respirators, and choosing the correct model is essential for safety purposes. This guide will explain the different types of respirators available, including single-use and multi-use options. This guide will also help clarify the important differences between masks and respirators, outline different respirator certifications and uses and explain how replacement cartridges work. Read on to learn about the best mask for paint, mold and more. If you need to know which respirator is best for your DIY project, check out this respirator quick reference guide. For pro projects, check out this pro respirator quick reference guide.

A solid white line marks the edge of the pavement on most roads. Stop lines, crosswalks and parking spaces are also marked by white lines. Symbols such as arrows are in white also. A single yellow line marks the left edge of all divided or one-way roadways. Curbs are often marked yellow in no-parking zones near fire hydrants or intersections.

P Ratings = Oil Proof. For protection against oil-based and non-oil based particles. Examples of oil particles include lubricants, cutting fluids, glycerine, some pesticides, and some solvents.

Many crossings have gates with flashing red lights and bells. Stop when the lights begin to flash, and before the gate lowers across your side of the road. Do not move forward until the gates are raised and the lights stop flashing as there may be a train approaching on an adjacent track.

Come to a complete stop at the marked stop line or before moving into the crosswalk or intersection. After stopping, you may turn right on red arrow at most intersections if the way is clear. Some intersections display a "NO TURN ON RED" sign, which you must obey. Left turns on red arrow from a one-way street into a one-way street are also allowed.

ANIMAL CROSSING. The animal pictured on the sign is common in this area: watch for this species crossing the road particularly during twilight and nighttime hours.

Go — but only if the intersection is clear. Yield to pedestrians and vehicles still in the intersection. If turning left, wait for gap in oncoming traffic to complete turn.

A four-way stop sign means that there are four stop signs at this intersection. Traffic from all four directions must stop. The first vehicle to reach the intersection should move forward first. If two vehicles reach the intersection at the same time, the driver on the left yields to the driver on the right.

There are several signs, signals and pavement markings that indicate highway railroad crossings. When you see one of them, slow down and be ready to stop.

New respirators may or may not come with the appropriate cartridges. Check before buying and ensure you get the right type of cartridge for the job.

White lane lines separate lanes of traffic moving in the same direction. Single white lines may also mark the right edge of the pavement.

Choosing the right respirator for your task or work environment is essential. If your respirator is not the right size for your face, it won’t provide adequate protection, even if you’re using a heavy-duty full-face model. Use these tips to pick a respirator that’s the right size so you get the maximum amount of protection possible:

For reusable respirators, establish a cartridge/filter change schedule by using a service life calculator or using common change schedules based on substance-specific standards as defined by OSHA. If at any time you detect a smell, taste or irritation from the contaminants, leave the contaminated area immediately, replace the cartridges and perform a seal check before reentering the hazardous area. In environments containing oily aerosols, replace filter according to manufacturer instructions.