Type 4 object markers are used to mark the end of a roadway. 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. Figure 2C-2 Example of Warning Signs for a Turn. If a Type 2 or Type 3 object marker is used to mark an obstruction adjacent to the roadway, the edge of the object marker that is closest to the road user shall be installed in line with the closest edge of the obstruction. It also employsa thicker line weight found on other W4-series signs. If used, the Depth Gauge sign shall be in addition to the ROAD MAY FLOOD sign and shall indicate the depth of the water at the deepest point on the roadway. The modifiedW4-2 breaks that convention by rendering lanes as voids rather than solids, regardless of how one interprets the dashed line (as divider or path). Why Are Car Accidents So Common In Florida? Alternate legends such as TEXTURED PAVEMENT or BRICK PAVEMENT may also be used on the W8-15 sign. 07 Object markers should not present a vertical or horizontal clearance obstacle for pedestrians. 06 The W11-1, W11-15, and W11-15a signs and their related supplemental plaques may have a fluorescent yellow-green background with a black legend and border. Where conditions warrant, more than one marker, or a larger marker with or without a Type 3 Barricade (see. 05 When used for marking obstructions within the roadway or obstructions that are 8 feet or less from the shoulder or curb, the minimum mounting height, measured from the bottom of the object marker to the elevation of the near edge of the traveled way, should be 4 feet. Where an extra lane has been provided for slower moving traffic (see. Then turn off your signal light. Drivers Who Merge at the Last Minute May Be Annoying, But They're Right Guidance: However, these differences in engineering terminology are not well known by the public, so for signing purposes these terms are interchangeable. 09 If an Intersection Warning sign is used where the side roads are not opposite of each other, the Offset Side Roads (W2-7) symbol sign (see Figure 2C-9) should be used instead of the Cross Road symbol sign. If a minimum size is not provided in the Freeway Column, the Expressway size should be used. As you inch along, drivers to your left keep zipping by. TRANSVERSE RUMBLE STRIP USE WITHIN WORK ZONES. 06 The Merge sign should not be used where two roadways converge and merging movements are not required. Standard: A better appearance can be achieved if the black stripes are wider than the yellow stripes. 04 The Two-Direction Large Arrow sign directing traffic to the left and right shall not be used in the central island of a roundabout. 07 Lane Ends signs should not be installed in advance of the downstream end of an acceleration lane. The rectangular W19-1 and W19-2 signs may be post-mounted or may be mounted overhead for increased emphasis. 05 The Advisory Speed plaque shall only be used to supplement a warning sign and shall not be installed as a separate sign installation. When a HILL BLOCKS VIEW sign is used, it should be supplemented by an Advisory Speed (W13-1P) plaque indicating the recommended speed for traveling over the hillcrest based on available stopping sight distance. I wonder if more closely aligning the sign to micmic the road would be an advantage. I tagged this "Alberta, Canada" for you, since that is what your link says. The Distance Ahead (W16-2 series and W16-3 series) plaques (see, The Next Distance (W7-3aP and W16-4P) plaques (see, If the condition indicated by a warning sign is located on an intersecting road and the distance between the intersection and condition is not sufficient to provide adequate advance placement of the warning sign, a Supplemental Arrow (W16-5P or W16-6P) plaque (see, Supplemental Arrow plaques shall have the same legend design as the Advance Turn Arrow and Directional Arrow auxiliary signs (see, Hill-Related (W7-2 series, W7-3 series) plaques (see.