DIAMOND: 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. Stop signs are always octagonal (8 sided).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. 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 ... 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 ... The use of red on signs is limited to stop, yield, and prohibition signs. A white background indicates a regulatory sign; yellow conveys a general warning message; green shows permitted traffic movements or directional guidance; fluorescent yellow/green indicates pedestrian crossings and school zones; orange is used for warning and guidance in ...– 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 ...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.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 ... 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.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.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. 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. 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.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.Railroad Warning: Used to warn that there is a railroad crossing ahead. Sign Shapes: Crossbuck Highway-Rail Grade Crossing: Identifies the location of a railroad crossing.EXPLANATION: A school crossing sign is an example of a Warning sign. Warning signs are usually yellow, like curve ahead, school zone, low bridge, etc. School zones are indicated by regulator signs with the posted hours of operation and flashing yellow lights advising caution.• The driver fails to observe and obey the advance railroad warning sign and other warning signs and signals. • While driving at night or in an unfamiliar location, the driver travels at a speed too great and cannot stop in time or drives in front of a train. • Radio, cell phones and other distractions avert the driver’s attention.– 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 ...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 ...Jul 2, 2019 · Several warning signs are in place along Onondaga Lake Parkway to help prevent tractor trailers from crashing into the low railroad bridge. Data from the New York Department of Transportation ... 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. 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.When approaching a train crossing, you’ll often see advance warning signs. (But not always!) The most common warning sign is a big yellow circle with an “X” and the letters “RR.”. No, the “RR” does not stand for RiRi. If the train is already on its way, you might see flashing red lights.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. 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 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 ... Warning Signs and Devices Advance Warning Signs. The round, black-on-yellow warning sign is placed ahead of a public railroad-highway crossing. The advanced warning sign, tells you to slow down, look and listen for a train, and be prepared to stop at the tracks if a train is coming. Pavement Markings. Pavement markings mean the same as the ...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.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.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.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 ... Warning Railroad Crossing Interstate Highway Many of these warning signs use the same symbols as yellow warning signs, but you should take extra care when orange signs are posted. Traffic and road conditions around work zones often change quickly. In addition to posting orange warning signs, road work crews can use a number of Permanent five-sided (pentagon shaped) school crossing signs warn that children may be crossing any time of the day. Pennant sign. ... Railroad warning sign.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.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.The round yellow sign, called an Advance Warning Sign, warns drivers that the road intersects with railroad tracks ahead. This sign tells us to slow down and be prepared to stop if a train is approaching. There is a no passing zone within 100 feet of the approach to a railroad crossing.Traffic Safety. Passive Warning Devices. Safety at Indiana rail-highway crossings are controlled through a variety of roadway signs, warnings, and pavement notices. RR Advance Warning Sign. The advance warning sign is placed to attract the driver’s attention and warn that there is a railroad crossing ahead so the driver can slow down to look ...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.respond to an approaching train and actively warn drivers and walkers. Passive signs you may see before you get to a crossing Yellow circular Advance Warning sign. This sign warns drivers that the road crosses the railroad tracks ahead. When drivers see this sign, it reminds them to slow down, look and listen for a train 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.respond to an approaching train and actively warn drivers and walkers. Passive signs you may see before you get to a crossing Yellow circular Advance Warning sign. This sign warns drivers that the road crosses the railroad tracks ahead. When drivers see this sign, it reminds them to slow down, look and listen for a train– More than 50% have automatic warning systems • 34.7% have flashing lights and gates • 15.5% have flashing lights – More than 60% of collisions occur at crossings with automatic warning systems. • Almost 80,500 private at highway-grade crossings – Most do not have automatic warning devices DIAMOND: 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. Stop signs are always octagonal (8 sided).A warning sign is a type of sign which indicates a potential hazard, obstacle, or condition requiring special attention. Some are traffic signs that indicate hazards on roads that may not be readily apparent to a driver. [1]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. 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 ...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 ... 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 ...Signs warn you that you are approaching railroad tracks. Look and listen for trains in both directions. Be ready to stop, if necessary. You should be prepared for a train to come at any time, day or night. Never stop on railroad tracks. Usually by the time a train conductor sees you, it is too late for the train 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 ... 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. 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.– 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 ...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. Answers. Be ready to drive faster than the train. Be prepared to stop if a train is nearby. Look for a way around any lowered gates. Assume no trains are nearby and continue driving normally. Railroad crossing warning signs are used to warn drivers of the possibility of a train. Drivers should obey all railroad crossing warning signs and never ... 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: 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. Railroad warning signs warn _____. If it is safe to cross the tracks. If we are approaching or next to a railroad. If a train is approaching. If it's time to make a dancing train. You are driving down the highway when you see this sign. What is its meaning? The road ahead is not for the soft of heart. The road ahead is for large vehicles. Rail Signs and Signals. You'll find these passive and active signs and traffic control devices along roads that cross railroad tracks before and at highway-rail grade crossings. Their purpose is to regulate, warn or guide traffic. They alert drivers to the presence of railroad tracks and to the possibility of an approaching train. 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.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 ...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. 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.MVA Learners Permit Test. Come to a complete stop at the stop line or, if there is no stop line, prior to the crosswalk and before entering the intersection, and remain stopped as long as the signal is red. Unless a sign prohibits turning on red, after coming to a complete stop, you may turn right or you may turn left from a one-way street to ...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 ... The use of red on signs is limited to stop, yield, and prohibition signs. A white background indicates a regulatory sign; yellow conveys a general warning message; green shows permitted traffic movements or directional guidance; fluorescent yellow/green indicates pedestrian crossings and school zones; orange is used for warning and guidance in ...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.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.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. 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.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.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 ...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 ... a) green- Movement is permitted. b) yellow- General warning, caution. c) red- Stop or prohibition. Explain the type (s) of information communicated by the following sign colors. a) blue- Motorist services guidance. b) brown- Recreational/cultural guidance. c) orange- Temp work zone. d) pink- Incident management.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.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: – 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 ...Answers. Be ready to drive faster than the train. Be prepared to stop if a train is nearby. Look for a way around any lowered gates. Assume no trains are nearby and continue driving normally. Railroad crossing warning signs are used to warn drivers of the possibility of a train. Drivers should obey all railroad crossing warning signs and never ...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 ...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.Answers. Be ready to drive faster than the train. Be prepared to stop if a train is nearby. Look for a way around any lowered gates. Assume no trains are nearby and continue driving normally. Railroad crossing warning signs are used to warn drivers of the possibility of a train. Drivers should obey all railroad crossing warning signs and never ... 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?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.
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 ... . 2badforyou
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 Railroad Crossing Interstate Highway Many of these warning signs use the same symbols as yellow warning signs, but you should take extra care when orange signs are posted. Traffic and road conditions around work zones often change quickly. In addition to posting orange warning signs, road work crews can use a number of RAILROAD (TRAIN) CROSSINGS. Signs warn you that you are approaching railroad tracks. Look and listen for trains in both directions. Be ready to stop if necessary. You should expect a train on a track at any time, day or night. Never stop on a railroad track. Usually by the time a train sees you it will be too late for it to stop.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 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.Jul 2, 2019 · Several warning signs are in place along Onondaga Lake Parkway to help prevent tractor trailers from crashing into the low railroad bridge. Data from the New York Department of Transportation ... 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 ...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. DIAMOND: 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. Stop signs are always octagonal (8 sided).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 ...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..