General Parking Rules You are responsible for making sure that your vehicle is not a hazard when it is parked. Bizarre. Michigan Legislature - Section 257.634 04 Minimum spacing between warning signs with different messages should be based on the estimated PRT for driver comprehension of and reaction to the second sign. Where there are two changes in roadway alignment in opposite directions that are separated by a tangent distance of less than 600 feet, the Reverse Turn (W1-3) sign should be used instead of multiple Turn (W1-1) signs and the Reverse Curve (W1-4) sign should be used instead of multiple Curve (W1-2) signs. 06 The Low Clearance sign may be installed on or in advance of the structure. The cars in the lane that is ending should only merge when it is safe to do so. 01 The Turn (W1-1) sign or the Curve (W1-2) sign may be combined with the Cross Road (W2-1) sign or the Side Road (W2-2 or W2-3) sign to create a combination Horizontal Alignment/Intersection (W1-10 series) sign (see Figure 2C-1) that depicts the condition where an intersection occurs within or immediately adjacent to a turn or curve. The One-Direction Large Arrow sign directing traffic to the right shall not be used in the central island of a roundabout. So in 2001, the Federal Highway Administrations Office of Transportation Operations pitched an alternative based on the original with a small but critical change. They are independent attorneys who pay a fee to be listed on the website and have their names provided, on request, to website users. One thing I looked at, which I think helps, is softening the right line (left for left lane ending, merge right) so it curves inward instead of having sharp angles. A PAVEMENT ENDS (W8-3) word message sign (see. Where there is a need to remind road users of the recommended advisory speed, a horizontal alignment warning sign with an advisory speed plaque may be installed at or beyond the beginning of the exit curve or on the outside of the curve, provided that it is apparent that the sign applies only to exiting traffic. The speed limit displayed on the Reduced Speed Limit Ahead sign shall be identical to the speed limit displayed on the subsequent Speed Limit sign. 01 The NO PASSING ZONE (W14-3) sign (see Figure 2C-8) shall be a pennant-shaped isosceles triangle with its longer axis horizontal and pointing to the right. By showing you in advance how the roads join each other, the signs let you know when the road you are traveling on does not continue . Chevron Alignment signs shall not be placed on the far side of a T-intersection facing traffic on the stem approach to warn drivers that a through movement is not physically possible, as this is the function of a Two-Direction (or One-Direction) Large Arrow sign. Guidance: Passing lanes are only provided where there is actually space for overtaking to happen (in Maine, some are so short you would have to be right on top of the car in front and then floor it to get by within the space provided. Follow the S lane to the left then signal right to enter the turning lane Both lanes come to an end. These signs tell you one lane on a multi-lane roadway will end ahead. Horizontal Alignment Warning signs may also be used on other roadways or on arterial and collector roadways with less than 1,000 AADT based on engineering judgment. Right Lane Ends usually works pretty well if drivers are literate enough. This means the normal traffic lane is the right-hand lane (as we I hope were all taught). The Fine Art of Merging Safely on BC Highways | TranBC If used, Chevron Alignment (W1-8) signs and/or One-Direction Large Arrow (W1-6) signs should be installed on the outside of the exit curve as described in. 05 The effectiveness of the placement of warning signs should be periodically evaluated under both day and night conditions. Though this is also confusing because there arent dotted lines separating them. 03 The RAMP METERED WHEN FLASHING sign shall be supplemented with a warning beacon (see Section 4L.03) that flashes when the ramp control signal is in operation. Slow down and . Big rigs cannot use the left lane between 610 Loop and The Woodlands. I pass them on the inside after I give them a chance. Mitsubishi Lancer accelerates. left lane ends merge right - YouTube 08 Chevron Alignment signs shall not be used to mark obstructions within or adjacent to the roadway, including the beginning of guardrails or barriers, as this is the function of an object marker (see Section 2C.63). A Truck Rollover Warning (W1-13) sign (see. Both have lots of hills and two lane roads with passing lanes up the hills. Campbelltown Rd, Casula 23rd January 2023Music is: No Fear by Samsung 06 Warning signs regarding conditions associated with school buses and schools and their related supplemental plaques shall have a black legend and border on a fluorescent yellow-green background (see Section 7B.07). Is the lane just ending? However, these differences in engineering terminology are not well known by the public, so for signing purposes these terms are interchangeable. 01 Where applicable, truck escape (or runaway truck) ramp advance warning signs (see Figure 2C-4) should be located approximately 1 mile, and 1/2 mile in advance of the grade, and of the ramp. 01 A Merge (W4-1) sign (see Figure 2C-8) may be used to warn road users on the major roadway that merging movements might be encountered in advance of a point where lanes from two separate roadways converge as a single traffic lane and no turning conflict occurs. When a Truck Rollover (W1-13) sign (see Section 2C.13) is also installed for the ramp, the advisory exit speed should be based on the truck advisory speed for the horizontal alignment using recommended engineering practices. 08 Additional shoulder signs should be placed at appropriate intervals along the road where the condition continually exists. Another sign warns when the lane is ending so drivers in the right-hand lane can begin to merge safely with traffic in the left-hand lane. Support: No more than one Cross Road or two Side Road symbols should be displayed on any one combination Horizontal Alignment/Intersection sign. 01 The Double Arrow (W12-1) sign (see Figure 2C-5) may be used to advise road users that traffic is permitted to pass on either side of an island, obstruction, or gore in the roadway. 07 If the curve has a change of direction of approximately 270 degrees, such as on a cloverleaf interchange ramp, the 270-degree Loop (W1-15) sign may be used instead of a Curve or Turn sign. In W4-3, the black arrow is the direction of travel, the yellow is the roadway, and the black dashed lines are pavement markings. The distances are determined by providing the driver a PRT of 14.0 to 14.5 seconds for vehicle maneuvers (2005 AASHTO Policy, Exhibit 3-3, Decision Sight Distance, Avoidance Maneuver E) minus the legibility distance of 180 feet for the appropriate sign. The distances shown in Table 2C-4 can be adjusted for roadway features, other signing, and to improve visibility. Standard: The Divided Highway (W6-1) sign shall not be used instead of a Keep Right (R4-7 series) sign on the approach end of a median island. How are speed limits decided in Australia? As illustrated above,thefigure-ground issue can be addressed usingthe graphic language already established by other signage. 02 The combination Horizontal Alignment/Advisory Speed sign may be used to supplement the advance Horizontal Alignment warning sign and Advisory Speed plaque based upon an engineering study. 01 The DEAD END (W14-1) sign (see Figure 2C-5) may be used at the entrance of a single road or street that terminates in a dead end or cul-de-sac. Personally, I just wish more people would heed these signs and not just whip over assuming everyone will just let them in. This new and improved version can now be found across the country (though old variants still existas well). Support: 02 If a portion of a street or highway features a roadway pavement surface that is grooved or textured instead of smooth, such as a grooved skid resistance treatment for a horizontal curve or a brick pavement surface, a GROOVED PAVEMENT (W8-15) sign (see Figure 2C-6) may be used to provide advance warning of this condition to motorcyclists, bicyclists, and other road users. The DEAD END (W14-1a) or NO OUTLET (W14-2a) signs shall not be used instead of the W14-1 or W14-2 signs where traffic can proceed straight through the intersection into the dead end street or no outlet area. Merging accidents can be quite hectic. Instead, you need to go with the flow. These signs may also be used at intermediate points along the ramp, especially if the ramp curvature changes and the subsequent curves on the ramp have a different advisory speed than the initial ramp curve. 04 If the reason that the freeway is ending is that the next portion of the freeway is not yet constructed and as a result all traffic must use an exit ramp to leave the freeway, an ALL TRAFFIC MUST EXIT (W19-5) sign (see Figure 2C-5) should be used in addition to the Freeway Ends signs in advance of the downstream end of the freeway. Option: The Canadian approach is much more coherent. The DEAD END (W14-1a) and NO OUTLET (W14-2a) signs shall be horizontal rectangles with an arrow pointing to the left or right. How Long Does The Arbitration Process Take? I guess theyre used when the lane arrangement is more complicated than a simple lane merger: http://www.drivingtesttips.biz/wp-content/uploads/2014/05/dual-carriageway-ends-300301.jpg, In the UK it was decided years ago that the standard signs we have would not do the job. The minimum mounting height, measured vertically from the bottom of a Type 4 object marker to the elevation of the near edge of the traveled way, shall be 4 feet. Option: People who cant instantly comprehend W-2 should not be driving. * The minimum size required for diamond-shaped warning signs facing traffic on multi-lane conventional roads shall be 36 x 36 per Section 2C.04. 01 The RIGHT (LEFT) LANE EXIT ONLY AHEAD (W9-7) sign (see Figure 2C-8) may be used to provide advance warning to road users that traffic in the right-hand (left-hand) lane of a roadway that is approaching a grade-separated interchange will be required to depart the roadway on an exit ramp at the next interchange. Car A (green) is ahead and therefore car B gives way The left lane ends. Use caution and move to the right in your lane as you approach the top of a hill. In this design,the two main lines of the W4-2 arepushed together they come to represent lanes rather than boundaries of lane space. 06 An advance street name plaque (see Section 2C.58) may be installed above or below an Advance Traffic Control sign. Standard: https://www.google.co.uk/search?q=motorway+lane+ends+uk&espv=2&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjc_deP2t3UAhXCKsAKHZfjCRAQ_AUIBygC&biw=710&bih=515#imgdii=Dzw7PnDlCZxMeM:&imgrc=ZC0DSl5EaIpQqM: Even more complex junctions can be mapped out with a clear sign; like lane 1 for turning off, lane 3 for staying on, lane 2 for either: https://image.slidesharecdn.com/knowyourtrafficsigns-150105033340-conversion-gate02/95/know-your-traffic-signs-81-638.jpg?cb=1420450457. On one-way streets or on divided highways where the . 07 The minimum size for all diamond-shaped warning signs facing traffic on exit and entrance ramps should be the size identified in Table 2C-2 for the mainline roadway classification (Expressway or Freeway). Changing lanes and merging | Transport and motoring - Queensland Your driving licence has been suspended. They shall not be mounted alone or displayed alone. On the shoulder of the highway either to the right or to the left. Alternative A maintains a degree of continuity by keeping (but merging) the main lines of the originalW4-2. 08 When object markers or markings are applied to an obstruction that by its nature requires a lower or higher mounting, the vertical mounting height may vary according to need. Standard: A subsequent survey of elderly drivers in the U.S. and Canada found that fewer than 40% of participants could properly understand the sign. The minimum advance placement distance is listed as 100 feet to provide adequate spacing between signs. If a W4-4P plaque or a plaque with an alternative message is used, it shall be mounted below the STOP sign. Feel free to, By submitting this form, you acknowledge that you have read the, Lane Ends, Merge Right: 10 (More!) I cant help but like the Bay Area alternative, its clever how much difference the small adjustment makes. 03 If an approach to a roundabout has a statutory or posted speed limit of 40 mph or higher, the Circular Intersection (W2-6) symbol sign should be installed in advance of the circular intersection. W14-3 is shown as a pennant-shaped isosceles triangle. 04 A Winding Road (W1-5) sign may be used instead of multiple Turn (W1-1) or Curve (W1-2) signs where there are three or more changes in roadway alignment each separated by a tangent distance of less than 600 feet. TRANSVERSE RUMBLE STRIP USE WITHIN WORK ZONES. Guidance: Typical condition is the warning of a potential stop situation. The background color of the W16-1P plaque shall match the background color of the warning sign with which it is displayed. Putting a larger water tank in your RV or motorhome? It means your lane is about to disappear. The signs also say Slower traffic keep right and of course no one thinks they are going slow, even if they are 10 mph under the limit. When a lane ends, a sign gives instructions. Keeping visual continuity in mind, the nonstandard W4-2 variant above (spotted near downtownSan Francisco) suggests one more potential vector for a redesign. Standard: The minimum size for all diamond-shaped warning signs facing traffic on exit and entrance ramps should be the same size sign as the mainline roadway classification. 01 The Type 4 object marker is used to warn and alert road users of the end of a roadway in other than construction or maintenance areas. It makes it more clear how infuriating these are. These conflicts might be relatively confined, or might occur randomly over a segment of roadway. Right-of-Way in Merge? - Police Forums & Law Enforcement Forums Any of these situations could lead to a merging accident. Guidance: 05 Appropriate signs (see Sections 2B.32 and 2C.25) directing traffic to one or both sides of the obstruction may be used instead of the object marker. Merging Traffic | DriveSmartBC The distance is determined by providing a 2.5 second PRT, a vehicle deceleration rate of 10 feet/second. Standard Highway Signs and Markings (SHSM) BookDesign Details, Interpretations US DOT Home | FHWA Home | MUTCD Home | Operations Home | Privacy Policy, United States Department of Transportation - Federal Highway Administration. The W9-7 sign shall be a horizontal rectangle with a black legend and border on a yellow background. Representing routes of travel as voids creates potential figure-ground confusion on the W4-2. Option: 10 For a yield-controlled channelized right-turn movement onto a roadway without an acceleration lane, a NO MERGE AREA (W4-5P) supplemental plaque may be mounted below a Yield Ahead (W3-2) sign and/or below a YIELD (R1-2) sign when engineering judgment indicates that road users would expect an acceleration lane to be present. Interstate 10 (I-10) - I-10 has restricted travel in the left lanes headed East out . Slip and Fall Accidents at Stores or Businesses, What You Need to Know if You Slip and Fall at a Large Store. Right-of-Way During Traffic Merges on Freeways Section 545.061 of the Texas Transportation Code states that a driver must yield to traffic on his/her left when entering a lane from the right, on a roadway divided into three or more lanes for one-way traffic. When a Truck Rollover (W1-13) sign (see. The Advisory Speed plaque shall only be used to supplement a warning sign and shall not be installed as a separate sign installation. 04 A short stretch of depressed alignment that might momentarily hide a vehicle should be treated as a no-passing zone when center line striping is provided on a two-lane or three-lane road (see Section 3B.02). Type 3a striped marker, 12 x 36 inches, consisting of a vertical rectangle with alternating black and retroreflective yellow stripes sloping downward at an angle of 45 degrees toward the side of the obstruction on which traffic is to pass. 07 Chevron Alignment signs shall not be placed on the far side of a T-intersection facing traffic on the stem approach to warn drivers that a through movement is not physically possible, as this is the function of a Two-Direction (or One-Direction) Large Arrow sign. 02 A Turn (W1-1) sign shall be used instead of a Curve sign in advance of curves that have advisory speeds of 30 mph or less (see Figure 2C-2). Chapter 2C - MUTCD 2009 Edition - FHWA - Transportation Typical signs are Merge and Right Lane Ends. Standard warning signs in this Chapter should also be used where applicable. When Two Lanes Merge Into One, Who Has the Right of Way? 03 The Chevron Alignment sign shall be a vertical rectangle. Table 2C-4 is provided as an aid for determining warning sign location. A TRAIL X-ING (W11-15P) supplemental plaque (see. Your donations are vital to keeping us independent and strong! Guidance: But by pulling back and centering the dotted line, the lanes are given equal areaon either side and the dotted line clearly acts as a divider, not a path of travel. Figure 2C-10 Vehicular Traffic Warning Signs and Plaques. Trucks merging must plan further ahead as they need more room to merge into. If the W11-2, W11-6, W11-7, or W11-9 sign is mounted overhead, the W16-7P plaque shall not be used. The combined Bicycle/Pedestrian (W11-15) sign may be used where both bicyclists and pedestrians might be crossing the roadway, such as at an intersection with a shared-use path. Road Rules Refresher: Merging - AMA ADVISORY SPEED SIGN. Your email address will not be published. 01 The Advance Traffic Control symbol signs (see Figure 2C-6) include the Stop Ahead (W3-1), Yield Ahead (W3-2), and Signal Ahead (W3-3) signs. The lettering on Advance Street Name plaques shall be composed of a combination of lower-case letters with initial upper-case letters. 02 The Playground sign may have a fluorescent yellow-green background with a black legend and border. See D-14 for example: https://pl.wikipedia.org/wiki/Plik:Znak_D-14.svg. Lane Ends Merge (Left or Right) Warning Signs Lane Ends Merge Left or Right Warnings signs give advance notice to motorists that the lane is ending requiring traffic to merge left or right. Modifications may be made to the symbols shown on combined horizontal alignment/intersection signs (see. 03 Warning signs should be placed so that they provide an adequate PRT. A Depth Gauge (W8-19) sign (see Figure 2C-6) may also be installed within a roadway section that frequently floods. Thank you for articulating how the symbolism is different in these signs than other ones. covers "right-of-way rules." MCL 257.649 (7) covers merging and states: "When a . Guidance: You should always: Park in a . Guidance: Support: There is another set of informative signs to signal lane ending. Merge Sign: What Does it Mean? - Driving-Tests.org 05 The approximate spacing of Chevron Alignment signs on the turn or curve measured from the point of curvature (PC) should be as shown in Table 2C-6. Guidance: 04 Except in emergencies or when the condition is temporary, an Advisory Speed plaque shall not be installed until the advisory speed has been determined by an engineering study. Standard: Alabama DMV Road Signs Flashcards | Quizlet THE RULES (not laws, just common-sense ones, really) Where two lanes merge into one, the vehicle in front has the right of way. This has annoyed me ever since I figured out what this sign really meant. When the lane that drivers need to merge into is filled with cars, that is dangerous. 02 When an Added Lane sign is to be installed on a roadway that curves before converging with another roadway that has a tangent alignment at the point of convergence, the Entering Roadway Added Lane (W4-6) sign (see Figure 2C-8) should be used to better portray the actual geometric conditions to road users on the curving roadway. Who Is Liable for a Merging Accident in California? Always use your indicator to signal your intentions to other drivers when merging. Standard: The surveyors concluded that the difference between fewer lanes, one lane and narrow lanes ahead was not apparent, writesEric G. Feldblum of the Connecticut DoT. To have the privilege to drive should mean knowledge of the rules. 01 Warning signs call attention to unexpected conditions on or adjacent to a highway, street, or private roads open to public travel and to situations that might not be readily apparent to road users. Its best practice to signal for at least 3 seconds before merging and to merge at the same speed as the traffic you are merging into (i.e. For a yield-controlled channelized right-turn movement onto a roadway without an acceleration lane, a NO MERGE AREA (W4-5P) supplemental plaque may be mounted below a Yield Ahead (W3-2) sign and/or below a YIELD (R1-2) sign when engineering judgment indicates that road users would expect an acceleration lane to be present. 04 Where conditions warrant, more than one marker, or a larger marker with or without a Type 3 Barricade (see Section 2B.67), may be used at the end of the roadway. Support: As you travel along the ramp, you should accelerate. 06 If the curve has a change in horizontal alignment of 135 degrees or more, the Hairpin Curve (W1-11) sign may be used instead of a Curve or Turn sign. Standard: The distances contained in. If used, Reduced Speed Limit Ahead signs shall be followed by a Speed Limit (R2-1) sign installed at the beginning of the zone where the speed limit applies. Option: Option: Option: My gripe isnt with the signs themselves. 01 For information on placement of warning signs, see Sections 2A.16 to 2A.21. Drivers have a duty or a responsibility to make sure that they change lanes properly and that they make sure it is safe to make the move and merge before they do so. Step 1: Accelerate to match the speed of highway traffic as you travel on ramp. When a Merge sign is to be installed on an entering roadway that curves before merging with the major roadway, such as a ramp with a curving horizontal alignment as it approaches the major roadway, the Entering Roadway Merge (W4-5) sign (see. To turn left on multi-lane streets and highways, start from the left lane. The Advisory Speed (W13-1P) plaque (see Section 2C.08) may be used to indicate the recommended speed. Passing on the shoulder. 02 Supplemental Arrow plaques shall have the same legend design as the Advance Turn Arrow and Directional Arrow auxiliary signs (see Sections 2D.26 and 2D.28) except that they shall have a black legend and border on a yellow or fluorescent yellow-green background, as appropriate. The W25-1 and W25-2 signs shall be vertical rectangles. Four car washing mistakes to avoid at all costs. 01 A ONE LANE BRIDGE (W5-3) sign (see Figure 2C-5) should be used on two-way roadways in advance of any bridge or culvert: Guidance: Arrows pointing to the left shall be placed to the left of the street name, and arrows pointing to the right shall be placed to the right of the street name. Right lane ends. 01 The SPEED HUMP (W17-1) sign (see Figure 2C-6) should be used to give warning of a vertical deflection in the roadway that is designed to limit the speed of traffic. Drivers are also discouraged from trying to merge into small gaps to avoid following too closely. No suggested distances are provided for these speeds, as the placement location is dependent on site conditions and other signing. 05 The curved arrow on the Truck Rollover Warning sign shows the direction of roadway curvature. Option: Having a clear roadway width of 18 feet or less where the sight distance is limited on the approach to the structure. And customizing signs for each situation would be cost prohibitive. 04 On one-way streets or on divided highways where the width of the median will permit, two Lane Ends signs may be placed facing approaching traffic, one on the right-hand side and the other on the left-hand side or median. A NEW plaque may also be mounted above an advance warning sign (such as a Signal Ahead sign for a newly-installed traffic control signal) for a new traffic regulation. The advisory speed displayed on the combination Horizontal Alignment/Advisory Speed sign should be based on the advisory speed for the horizontal curve using recommended engineering practices (see, The Turn (W1-1) sign or the Curve (W1-2) sign may be combined with the Cross Road (W2-1) sign or the Side Road (W2-2 or W2-3) sign to create a combination Horizontal Alignment/Intersection (W1-10 series) sign (see, Elements of the combination Horizontal Alignment/Intersection sign related to horizontal alignment should comply with the provisions of, The use of the combination Horizontal Alignment/Intersection sign shall be in accordance with the appropriate Turn or Curve sign information shown in, A One-Direction Large Arrow (W1-6) sign (see, A One-Direction Large Arrow (W1-6) sign may be used to supplement a Turn or Reverse Turn sign (see. Be prepared to change lanes, or to allow other vehicles to merge smoothly into your lane. Other forms of speed humps include speed tables and raised intersections. And finally, it appears Maine drivers have never been taught what a passing lane is or how it works. 01 Hill-Related (W7-2 series, W7-3 series) plaques (see Figure 2C-4) or other appropriate legends and larger signs should be used for emphasis or where special hill characteristics exist. By submitting above, I agree to the privacy policy and disclaimer and consent to be contacted by an agent via phone call or text message at the phone number(s) listed above, including wireless number(s). Guidance: 01 A Truck Rollover Warning (W1-13) sign (see Figure 2C-1) may be used to warn drivers of vehicles with a high center of gravity, such as trucks, tankers, and recreational vehicles, of a curve or turn where geometric conditions might contribute to a loss of control and a rollover as determined by an engineering study. The drivers traveling on the access ramp must yield to vehicles that are traveling on the exit ramp. Vehicles that are getting on the highway must yield to all traffic that is approaching them from behind. The crossing location identified by a W11-2, W11-6, W11-7, or W11-9 sign may be defined with crosswalk markings (see. 01 Non-Vehicular Warning (W11-2, W11-3, W11-4, W11-6, W11-7, W11-9, and W11-16 through W11-22) signs (see Figure 2C-11) may be used to alert road users in advance of locations where unexpected entries into the roadway might occur or where shared use of the roadway by pedestrians, animals, or equestrians might occur. If used, a supplemental warning plaque shall be installed on the same post(s) as the warning or regulatory sign that it supplements. Issued by FHWA, Turn, Curve, Reverse Turn, Reverse Curve, Winding Road, Hairpin Curve, 270-Degree Curve, Combination Horizontal Alignment/Advisory Exit or Ramp Speed, Divided Highway, Divided Highway Ends, Double Arrow, Freeway or Expressway Ends, All Traffic Must Exit, Slippery When Wet, Loose Gravel, Rough Road, Bridge Ices Before Road, Fallen Rocks, Road May Flood, Flood Gauge, Gusty Winds Area, Fog Area, Stop Ahead, Yield Ahead, Signal Ahead, Be Prepared To Stop, Speed Reduction, Drawbridge Ahead, Ramp Meter Ahead, Merge, Lane Ends, Added Lane, Two-Way Traffic, Right Lane, Cross Road, Side Road, T, Y, Circular Intersection, Side Roads. A short stretch of depressed alignment that might momentarily hide a vehicle should be treated as a no-passing zone when center line striping is provided on a two-lane or three-lane road (see, If used, the SPEED HUMP sign should be supplemented by an Advisory Speed plaque (see. Alternate legends such as TEXTURED PAVEMENT or BRICK PAVEMENT may also be used on the W8-15 sign. 03 Plaques with the appropriate alternative messages of TRAFFIC FROM LEFT (RIGHT) DOES NOT STOP or ONCOMING TRAFFIC DOES NOT STOP should be used at intersections where STOP signs control all but one approach to the intersection, unless the only non-stopped approach is from a one-way street. At locations where either a W25-1 or a W25-2 sign is required based on the provisions in, Vehicular Traffic Warning (W8-6, W11-1, W11-5, W11-5a, W11-8, W11-10, W11-11, W11-12P, W11-14, W11-15, and W11-15a) signs (see. Laws on Highway Merging in Texas | Texas Personal Injury Lawyers When used to mark obstructions more than 8 feet from the shoulder or curb, the clearance from the ground to the bottom of the object marker should be at least 4 feet. If you hit a car in the rear, then usually the driver in the back car is to blame, but there are situations when the car in front could be held partially responsible. Unless otherwise provided in this Manual for a particular plaque, supplemental warning plaques shall be mounted below the sign they supplement.