View some of the most common standard sign shapes in Richard C. Moeur's Manual of Traffic Signs. Advance Warning Sign. These signs warn you that railroad tracks are ahead. Watch out! This sign also tells you to slow down, look and listen because you may have to stop, and it shows which way the tracks cross the road. Quiet Zone. Trains do not blow their horns in these areas, but the engineer can still sound the horn in emergency situations.SIGN SHAPES WARNING SIGNS These signs are yellow with black lettering or symbols and usually diamond shaped. These signs warn you to slow down and be prepared to stop if necessary because a special situation or a hazard is ahead. Some common warning signs are shown below. TRAFFIC CONTROL 31 Octagon = Stop Triangle = Yield Vertical Rectangle ...Warning Signs. Warning signs are used to alert motorists of possible hazards that may be approaching or circumstances that may not be easily spotted. These are almost always yellow signs but can come in a variety of different shapes and sizes. Examples: Pedestrian crossing sign, animal crossing ahead, winding road ahead, and speed bumps ahead.this sign is a warning of a railroad crossing. Look, listen, slow down and be prepared to stop for trains or any vehicles using the rails. Trains may be approaching from either direction. If there is more than one track, trains may be approaching from either direction on either track.The Federal Railroad Administration minimum warning time is 20 seconds. Many states issue orders specifying the designed warning time at each crossing. Designed warning times vary from the low 20s to the high 30s, depending on the circumstances at the crossing. In addition to the signals and signs, Federal rules require train crews to begin ... Railroad warning signs warn _____. A.) If a train is approaching B.) If it's time to make a dancing train C.) If it is not safe to cross the tracks D.) If you are approaching or next to a railroad a) Construction zone ahead. b) Hospital ahead. c) Railroad crossing ahead. d) Roundabout ahead. d) Roundabout ahead. What should you do if you see this sign? a) Come to a complete stop, proceed when you have the right-of-way. b) Slow down, yield proceed when you have the right of way. c) Come to a complete stop only if there is a vehicle coming ...the 25 sites with active advance warning signs to 81 high-speed signalized intersections without active advance warning signs, it was concluded that active advance warning signs were effective in reducing the frequency and severity of accidents when the major and minor road ADTs were above 15,000 and 3,000, respectively.true. Flashing green lights that are not traffic signals are sometimes used to warn you of an upcoming stop sign, railroad crossing, an upcoming signal light, pedestrian crossing, school zone, or construction zone. false. A flashing red signal light has the same meaning as a stop sign. true. Also, ignoring warning devices and going around the gates makes the driver legally liable for any deaths, injuries, or damage to property if a collision occurs. At a crossing with active signs: 1) Stop and wait for the gate to go up. 2) Stop at flashing lights and proceed only if a train is not visible. Source: Operation Lifesaver, Inc. This part of the road's shoulder can only be used for emergencies. Mileposts are located __ on interstate highways starting at the state line. Every mile. Railroad warning signs warn _____. If we are approaching or next to a railroad. Broken yellow lines separate _____. Two-way roads where you can legally pass.Railroad Crossing Signs, Signals, and Gates: The round, yellow RXR sign is an advance warning sign indicating a railroad crossing ahead. RXR pavement markings are followed by a stop line closer to the tracks. The cross-buck sign marks the railroad crossing. The number of tracks may be shown below the cross-buck. Treat this as a yield sign. Nov 14, 2022 · C. Hazard warning sign. D. Yield sign. ANSWER: C. Diamond-shaped traffic signs warn you of hazards and specific road conditions ahead. A. Three-sided and yellow. B. Diamond shaped and orange. C. Round and yellow. D. Square and white. ANSWER: C. Circular (round) traffic signs mean there is a railroad crossing ahead. View some of the most common standard sign shapes in Richard C. Moeur's Manual of Traffic Signs. Some crossings have very little vehicular and train traffic. At such crossings it may not be cost effective to install and maintain gates or flashing lights. Decisions regarding the appropriate type of warning devices are made by the state highway officials. According to the Federal Railroad Administration, statistics show that most highway ... Study with Quizlet and memorize flashcards containing terms like Brown is used as a background color for guide and information signs related to points of recreation or cultural interest and on some street name signs., The shape of a circle is commonly used in California for advanced warning that means there is a railroad crossing ahead., You may cross over a solid yellow line to make a left ...Traffic signs, warning, general. Warning signs alert you to potential dangers ahead and changes in the road conditions. All warning signs must also be obeyed. A few of the more important warning signs are discussed below. Traffic signs, warning, pedestrian crossing. This warning sign indicates that there may be pedestrians crossing the roadway ...used to warn that there is a railroad crossing ahead RAILROAD WARNING. round sign shape. ... -this sign warn people behind it that it can only go 25MPH or lessThe active advance warning sign (AAWS) consists of one or two 12-inch yellow hazard identification beacons mounted above the advance warning sign, as shown in Figure 39. An advisory speed plate sign indicating the safe approach speed also should be posted with the sign. 94 The AAWS provides motorists with advance warning that a train is ... Advance Warning Sign. These signs warn you that railroad tracks are ahead. Watch out! This sign also tells you to slow down, look and listen because you may have to stop, and it shows which way the tracks cross the road. Quiet Zone. Trains do not blow their horns in these areas, but the engineer can still sound the horn in emergency situations. This part of the road's shoulder can only be used for emergencies. Mileposts are located __ on interstate highways starting at the state line. Every mile. Railroad warning signs warn _____. If we are approaching or next to a railroad. Broken yellow lines separate _____. Two-way roads where you can legally pass.Rail Road Cross buck Sign- You are legally required to yield to the the right of way to trains. Slow down, look, listen. Stop if needed. Advance Warning Sign- Usually the first sign you see when approaching a highway-rail section. Railroad lights- Do not stop on the tracks or within 15 feet of the crossing! Railroad Gates- Stop when the lights ...View some of the most common standard sign shapes in Richard C. Moeur's Manual of Traffic Signs. The road become slippery when wet. Drive in the right-hand lane and expect traffic from the left-hand lane. There’s a gradual curve ahead in the direction of the arrow. Crossroad ahead. Warning sign of a reduction of the lanes. T-intersection ahead. Y-intersection ahead. Other traffic lanes are going to come together.Exclusively to warn of existing or possible hazards on roadways or adjacent areas. Vertical Rectangle Generally for regulatory signs. Pentagon School advance and school crossing signs. Round Railroad advance warning signs. Crossbuck Railroad crossing. Octagon: Stop Signs are always octagonal (8 sided). A stop sign means that you must bring your ... The advanCe WaRning sign is usually the first sign drivers see when approaching a highway-rail intersection. This sign advises drivers to always slow down, look and listen and be prepared to stop for an approaching train. CRoSSbuCk signs are found at most highway-rail intersections.RM RP61C9 – Un-gated level crossing sign Stop Look Listen Beware of trains, a compulsory whistle sign for the train and a 20 mph speed limit on the bridge ahead. RM BFG9X6 – A Stop, Look, Listen warning sign beside a railway crossing. RM B34YP5 – Ungated level crossing sign Stop Look Listen Beware of trains with passing freight train.Study with Quizlet and memorize flashcards containing terms like Brown is used as a background color for guide and information signs related to points of recreation or cultural interest and on some street name signs., The shape of a circle is commonly used in California for advanced warning that means there is a railroad crossing ahead., You may cross over a solid yellow line to make a left ...The school crossing sign (or school zone sign) is a warning sign. School crossing signs are meant to warn drivers that they are approaching a crossing where school children cross the roadway. The school crossing sign is actually a combination of two signs; a school area sign and a diagonal downward pointing arrow plaque. The two signs together ...Study with Quizlet and memorize flashcards containing terms like No left turn- Regulatory, Stop sign- Regulatory, Railroad tracks ahead- Warning and more. Fresh features from the #1 AI-enhanced learning platform.true. Flashing green lights that are not traffic signals are sometimes used to warn you of an upcoming stop sign, railroad crossing, an upcoming signal light, pedestrian crossing, school zone, or construction zone. false. When you see a yellow light, you should slow down and stop before entering the intersection, if you can do so safely. Round: Railroad Warning Used to warn that there is a railroad crossing ahead. h.Crossbuck: Highway—Rail Grade Crossing Identifies the location of a railroad crossing. i. Trapezoid Recreation and cultural interest areas and National Forest Routes. 3. Regulatory Signs These signs provide notice to road users of traffic laws, and they must be ... This round sign means RAILROAD CROSSING ahead. RAILROAD CROSSING signs are yellow with a black crossbuck X and the letters RR. It is an advance warning sign that means a railroad track will cross the roadway ahead. In rural areas the sign may be up to 750 feet in advance of the railroad crossing. Slow down, look and stop if necessary.a) Construction zone ahead. b) Hospital ahead. c) Railroad crossing ahead. d) Roundabout ahead. d) Roundabout ahead. What should you do if you see this sign? a) Come to a complete stop, proceed when you have the right-of-way. b) Slow down, yield proceed when you have the right of way. c) Come to a complete stop only if there is a vehicle coming ...Also, ignoring warning devices and going around the gates makes the driver legally liable for any deaths, injuries, or damage to property if a collision occurs. At a crossing with active signs: 1) Stop and wait for the gate to go up. 2) Stop at flashing lights and proceed only if a train is not visible. Source: Operation Lifesaver, Inc.Study with Quizlet and memorize flashcards containing terms like Brown is used as a background color for guide and information signs related to points of recreation or cultural interest and on some street name signs., The shape of a circle is commonly used in California for advanced warning that means there is a railroad crossing ahead., You may cross over a solid yellow line to make a left ...Aug 8, 2020 · Passive signs – most common are the round yellow advance warning signs, pavement markings, crossbuck signs, stop signs and yield signs. Active signs – this includes flashing lights, gates with flashing red lights and other warning devices. How to Enter and Leave a Railroad Crossing. Here are 9 safety tips for railroad crossings: Round yellow warning signs alert motorists that there's a railroad crossing ahead. Warning signs are made with the highest quality .080 aluminum, coated with the industries best 3M or Avery reflective sheeting and printed to last beyond the sheeting warranty. Traffic Warning Signs; Object Markers; Railroad Signs; Crossing Signs; Dead End ... Pennant Road Signs. Pennant-shaped signs warn drivers that a no-passing zone is ahead. Diamond Road Signs. Diamonds are used for warning signs. Vertical Rectangle Road Signs. Vertical rectangle road signs are used to convey regulatory information, such as the speed limit. Pentagon Road Signs. Pentagons are used in school zones. Round Road Signswarning sign. Diamond-Shaped Traffic Signs Diamond-shaped traffic signs warn drivers of upcoming road conditions and hazards. A “Divided Highway Ends” sign is an example of a diamond-shaped traffic sign. Five-Sided Traffic Signs Five-sided traffic signs warn drivers that they are entering an area Green signs also provide guidance and information, i.e. parking signs, destination signs. Yellow means caution and this sign warns you to be prepared to slow down. You will often see yellow used for warning and school signs, as well as to indicate curves in the road, merging traffic, pedestrian crosswalks, railroad crossings, etc.Traffic signs, warning, general. Warning signs alert you to potential dangers ahead and changes in the road conditions. All warning signs must also be obeyed. A few of the more important warning signs are discussed below. Traffic signs, warning, pedestrian crossing. This warning sign indicates that there may be pedestrians crossing the roadway ...Railroad advance warning signs are: a) Red and triangular b) Black on white in the shape of an X c) Orange and diamond-shaped d) Yellow and round b) Black on white in the shape of an X An odd-numbered Interstate using single or double digit number indicates a route that: a) Runs in a loop around a city b) Extends outward from a loop around c ...2009 Edition Chapter 8B. Signs and Markings Section 8B.01 Purpose. Support: 01 Passive traffic control systems, consisting of signs and pavement markings only, identify and direct attention to the location of a grade crossing and advise road users to slow down or stop at the grade crossing as necessary in order to yield to any rail traffic occupying, or approaching and in proximity to, the ...Passive signs – most common are the round yellow advance warning signs, pavement markings, crossbuck signs, stop signs and yield signs. Active signs – this includes flashing lights, gates with flashing red lights and other warning devices. How to Enter and Leave a Railroad Crossing. Here are 9 safety tips for railroad crossings:The advanCe WaRning sign is usually the first sign drivers see when approaching a highway-rail intersection. This sign advises drivers to always slow down, look and listen and be prepared to stop for an approaching train. CRoSSbuCk signs are found at most highway-rail intersections.The active advance warning sign (AAWS) consists of one or two 12-inch yellow hazard identification beacons mounted above the advance warning sign, as shown in Figure 39. An advisory speed plate sign indicating the safe approach speed also should be posted with the sign. 94 The AAWS provides motorists with advance warning that a train is ... Flashing green lights that are not traffic signals are sometimes used to warn you of an upcoming stop sign, railroad crossing, an upcoming signal light, pedestrian crossing, school zone, or construction zone. A flashing red signal light has the same meaning as a stop sign. Regulatory signs are signs that indicate warning of potential dangers ...1 pt. Broken white lines. warn of a railroad crossing ahead. separate lanes of traffic moving in the same direction. indicate a no-passing zone. tell you where to stop. 5. Multiple-choice. At crossings there are signs with a toll-free number to call the railroad directly and warn them of stalled vehicles or other problems at the crossing. When crossing has more than one track, don't try to cross immediately after the end of the train passes -- there may be another train approaching on the second track. Advance Warning Signs: These signs are large circles with a yellow background, a black X in the middle and an R on each side. These warn the driver that the road crosses over tracks. These are primarily used to remind the driver to slow down, then look and listen for a train before going over the cross way. No Train Horn: These are rectangular ... a) Construction zone ahead. b) Hospital ahead. c) Railroad crossing ahead. d) Roundabout ahead. d) Roundabout ahead. What should you do if you see this sign? a) Come to a complete stop, proceed when you have the right-of-way. b) Slow down, yield proceed when you have the right of way. c) Come to a complete stop only if there is a vehicle coming ...View some of the most common standard sign shapes in Richard C. Moeur's Manual of Traffic Signs. signs are. Today we have learned about one kind of warning signs: signs that warn us of the dangers around railroad tracks. HIGHER ORDER THINKING To assure students are using critical thinking skills, present questions such as this at an appropriate place within the lesson: Can you think of ten other warning signs besides railway warning signs?This round sign means RAILROAD CROSSING ahead. RAILROAD CROSSING signs are yellow with a black crossbuck X and the letters RR. It is an advance warning sign that means a railroad track will cross the roadway ahead. In rural areas the sign may be up to 750 feet in advance of the railroad crossing. Slow down, look and stop if necessary. Road signs have been designed to be consistent. Red usually means stop or danger. Blue indicates user services or tourist information. Brown guides you to cultural or local attractions. Yellow asks for caution. Just as a color denotes one factor, shape designates another: stop signs are the only style that is octagonal.View some of the most common standard sign shapes in Richard C. Moeur's Manual of Traffic Signs. Nov 10, 2022 · Pennant Road Signs. Pennant-shaped signs warn drivers that a no-passing zone is ahead. Diamond Road Signs. Diamonds are used for warning signs. Vertical Rectangle Road Signs. Vertical rectangle road signs are used to convey regulatory information, such as the speed limit. Pentagon Road Signs. Pentagons are used in school zones. Round Road Signs Slow down and prepare for a very sharp turn. Chevron Alignment (Left). This sign indicates that the road will change direction sharply. Slow down to a safe speed. Main Road Curves to the Right Ahead. This sign indicates that the main road curves right with a side road entering from the left side in the curve.Oct 24, 2021 · EXEMPT RAILROAD WARNING SIGN (W10-1AP) (a) Justification. The Exempt Railroad Warning Sign (W10-1AP) shall be authorized for use at those railroad grade crossings having "exempt" status as determined by the Public Utility Commission and an Exempt Railroad Crossing Sign (R15-3P) mounted beneath the Railroad Crossbuck Sign (R15-1). (b) Placement. The advanCe WaRning sign is usually the first sign drivers see when approaching a highway-rail intersection. This sign advises drivers to always slow down, look and listen and be prepared to stop for an approaching train. CRoSSbuCk signs are found at most highway-rail intersections. Study with Quizlet and memorize flashcards containing terms like 1. What are the meanings of the eight shapes of signs: octagon, triangle, vertical rectangle, pentagon, round, pennant, diamond, horizontal rectangle?, 2. What are the meanings of the eight colors used for traffic signs: Red, Yellow, White, Orange, Black, Green, Blue, Brown?, 3. What actions should you take at a STOP, YIELD, and ...1. you are directed to do so by a flag person 2. there are flashing red lights or warning bells sounding 3. there is any warning device telling you a train is coming Solid and broken lines A solid yellow line on your side of the road might say no passing zone.2.3 WARNING SIGNS Warning signs are yellow with black lettering or symbols and most are diamond-shaped. These signs warn you to slow down and be prepared to stop if necessary; a special situation or hazard is ahead. Some common warning signs are shown below. INTERSECTION/ CROSSROAD There is another road ahead that crosses the road you are on. WatchRailroad warning signs warn _____. A.) If a train is approaching B.) If it's time to make a dancing train C.) If it is not safe to cross the tracks D.) If you are approaching or next to a railroadAug 8, 2020 · Passive signs – most common are the round yellow advance warning signs, pavement markings, crossbuck signs, stop signs and yield signs. Active signs – this includes flashing lights, gates with flashing red lights and other warning devices. How to Enter and Leave a Railroad Crossing. Here are 9 safety tips for railroad crossings: RM RP61C9 – Un-gated level crossing sign Stop Look Listen Beware of trains, a compulsory whistle sign for the train and a 20 mph speed limit on the bridge ahead. RM BFG9X6 – A Stop, Look, Listen warning sign beside a railway crossing. RM B34YP5 – Ungated level crossing sign Stop Look Listen Beware of trains with passing freight train. The active advance warning sign (AAWS) consists of one or two 12-inch yellow hazard identification beacons mounted above the advance warning sign, as shown in Figure 39. An advisory speed plate sign indicating the safe approach speed also should be posted with the sign. 94 The AAWS provides motorists with advance warning that a train is ... RM RP61C9 – Un-gated level crossing sign Stop Look Listen Beware of trains, a compulsory whistle sign for the train and a 20 mph speed limit on the bridge ahead. RM BFG9X6 – A Stop, Look, Listen warning sign beside a railway crossing. RM B34YP5 – Ungated level crossing sign Stop Look Listen Beware of trains with passing freight train. Some crossings have very little vehicular and train traffic. At such crossings it may not be cost effective to install and maintain gates or flashing lights. Decisions regarding the appropriate type of warning devices are made by the state highway officials. According to the Federal Railroad Administration, statistics show that most highway ... W2-6 Roundabout Symbol Sign. $30.80. Select Options. Fast Nationwide Shipping. Due to supply chain shortages related to COVID-19 lead times may be longer than usual. Orders may take 2 - 10 business days to ship. Specialty items such as LED Flashing signs and Roll-Up Signs have extended lead times. If your project is time sensitive please ... Advance Warning Sign. These signs warn you that railroad tracks are ahead. Watch out! This sign also tells you to slow down, look and listen because you may have to stop, and it shows which way the tracks cross the road. Quiet Zone. Trains do not blow their horns in these areas, but the engineer can still sound the horn in emergency situations.Nov 10, 2022 · Pennant Road Signs. Pennant-shaped signs warn drivers that a no-passing zone is ahead. Diamond Road Signs. Diamonds are used for warning signs. Vertical Rectangle Road Signs. Vertical rectangle road signs are used to convey regulatory information, such as the speed limit. Pentagon Road Signs. Pentagons are used in school zones. Round Road Signs warning sign. Diamond-Shaped Traffic Signs Diamond-shaped traffic signs warn drivers of upcoming road conditions and hazards. A “slippery when wet” sign is an example of a diamond-shaped traffic sign. Five-Sided Traffic Signs Five-sided traffic signs warn drivers that they are entering an area The place of safety to be occupied upon the approach of a train may not be on a track, unless working limits are established on that track. ( b) Watchmen/lookouts assigned to provide train approach warning shall devote full attention to detecting the approach of trains and communicating a warning thereof, and shall not be assigned any other ...Jan 29, 2020 · Road signs have been designed to be consistent. Red usually means stop or danger. Blue indicates user services or tourist information. Brown guides you to cultural or local attractions. Yellow asks for caution. Just as a color denotes one factor, shape designates another: stop signs are the only style that is octagonal. – Warning Signs and Devices . Advance Warning Signs. The round, black-on-yellow warning sign is placed ahead of a public railroad-highway crossing. The advance warning sign tells you to slow down, look and listen for the train, and be prepared to stop at the tracks if a train is coming. See Figure 2.15. Pavement markings mean the same as the ...Alert drivers to changing road conditions with Road Warning Signs. Protect both drivers and workers with heavy-duty aluminum signs that get noticed. • Huge selection of Road Work, Road Closed, Detour signs and much more! • Meet all of the latest road safety regulations with MUTCD-compliant designs. • Durable aluminum signs have a 10-year ...
warning sign. Diamond-Shaped Traffic Signs Diamond-shaped traffic signs warn drivers of upcoming road conditions and hazards. A “slippery when wet” sign is an example of a diamond-shaped traffic sign. Five-Sided Traffic Signs Five-sided traffic signs warn drivers that they are entering an area . K1 speed lee
Flashing green lights that are not traffic signals are sometimes used to warn you of an upcoming stop sign, railroad crossing, an upcoming signal light, pedestrian crossing, school zone, or construction zone. A flashing red signal light has the same meaning as a stop sign. Regulatory signs are signs that indicate warning of potential dangers ... This sign is a warning of a railroad crossing. Look, listen, slow down and be prepared to stop for trains or any vehicles using the rails. Railroad crossbuck. If there is more than one track, the sign below the crossbuck will indicate the number of tracks at the crossing. Slow down and be prepared to stop.Flashing green lights that are not traffic signals are sometimes used to warn you of an upcoming stop sign, railroad crossing, an upcoming signal light, pedestrian crossing, school zone, or construction zone. A flashing red signal light has the same meaning as a stop sign. Regulatory signs are signs that indicate warning of potential dangers ...Study with Quizlet and memorize flashcards containing terms like No left turn- Regulatory, Stop sign- Regulatory, Railroad tracks ahead- Warning and more. Fresh features from the #1 AI-enhanced learning platform. A yellow and black diamond-shaped sign. Warns you about conditions on or near the road. The sign with this shape and color means/is a. No passing zone. Which sign is used to show the end of a divided highway. 2. This orange diamond sign with a black cross in the middle shows one type of. intersection.Advance warning signs (Wl0-1, Wl0-2, Wl0-3, W10-4). The round, black, and yellow advance warning sign (W10-1) is located in advance of the crossing and serves to alert the motorist that a crossing is ahead. The advance warning sign has a minimum diameter of 36 inches for conventional roads. The sign is required in advance of all crossings except:A circular sign tells you of an approaching railroad crossing. A five-sided sign tells you there is a school nearby. A white rectangular sign tells you about important rules you must obey. Many road signs warn you to slow down and watch for hazards or special conditions ahead. Most warning signs are yellow and diamond-shaped with black letters ... A circular sign tells you of an approaching railroad crossing. A five-sided sign tells you there is a school nearby. A white rectangular sign tells you about important rules you must obey. Many road signs warn you to slow down and watch for hazards or special conditions ahead. Most warning signs are yellow and diamond-shaped with black letters ...Some crossings have very little vehicular and train traffic. At such crossings it may not be cost effective to install and maintain gates or flashing lights. Decisions regarding the appropriate type of warning devices are made by the state highway officials. According to the Federal Railroad Administration, statistics show that most highway ...Round yellow warning signs alert motorists that there's a railroad crossing ahead. Warning signs are made with the highest quality .080 aluminum, coated with the industries best 3M or Avery reflective sheeting and printed to last beyond the sheeting warranty. Traffic Warning Signs; Object Markers; Railroad Signs; Crossing Signs; Dead End ...Aug 8, 2020 · Passive signs – most common are the round yellow advance warning signs, pavement markings, crossbuck signs, stop signs and yield signs. Active signs – this includes flashing lights, gates with flashing red lights and other warning devices. How to Enter and Leave a Railroad Crossing. Here are 9 safety tips for railroad crossings: with “passive warning devices” (such as crossbucks, stop signs and yield signs). Trains often require a mile or more to stop, and they cannotdeviate from their course. That is why safety at grade crossings, by its nature, is primarily a motorist’s responsibility. The warning devices are there to protect motorists, not trains. The 5 sided sign warns of. School zone or school crossings. Traffic signs are used to. Control traffic and pedestrians. A flashing yellow traffic signal at an intersection means. Slow down and proceed with caution. When can you disregard a signal given by a police officer directing traffic. Never. Warning Signs. Warning signs tell you about conditions on or near the road ahead. They warn you about possible hazards or changes in roadway conditions. They are posted before the condition, so you have time to see what is ahead, decide how you should respond, and slow down or change your travel path, if necessary.This sign is most commonly used in California for advance warning that means there is a railroad crossing ahead. shape of a crossbuck This shape of a crossbuck is used exclusively to warn of a railroad crossing..