A Lane Shift Left Ahead is required when there are two changes in roadway alignment in opposite directions that are less than 600 feet apart, when a reverse curve affects three lanes, or when a reverse curve affects two lanes.
When it comes to your budget and the environment, these roll-up signs are the best choice. In the event of an emergency or disaster, their ease of use in setup and storage makes them the preferred option for road closures that are not pre-scheduled.
Anti-kiting device for stability
Identification legend makes it easy to spot without unrolling
Corner pocket protectors lengthen the life of your sign
MUTCD Code: W1-4L,
W1-4bL and W1-4cL
Place a Reverse Curve sign on tangent distance of less than 600 feet, for curves with a design speed of 30 mph or lower, it is advised to use Reverse curve signs that have 2 or 3 lanes.
When deciding whether to use 36” or 48” temporary warning signs, transportation engineers should consider the type of roadway.
Standard Mesh – The most affordable option for daytime use only. |
Non-Reflective Vynil – Fade resistant vinyl is an economical option for daytime use only. |
Orafol SuperBrite or 3M Hi Intensity Prismatic (HIP) - Ideal for day or nighttime usage. |
Premium Mesh – This pigmented mesh is breathable, resists mold and mildew, and is non-reflective for daytime use only. |
Orafol Marathon – Bright, longlasting fluorescence. Marathon fluorescence is less likely to lose power over time, making it a safer long-term investment. |
3M Diamond Grade (DG) – Another premium option. Lightactivated, fluorescent, wideangle prismatic lens reflective sheeting for maximum daytime brightness. |
The whole Bone Roll Up Sign line is compatible with Bone sign stands. They are NCHRP-350 certified, making them tested and approved for use on the national highway system.
Choose from Springless, Single Spring or Dual Spring.
Springless
Single Spring
Dual Spring
Traffic Signs And Safety at Your Work Zone | 7 Expert Tips |
The Safety Standards for Signs, Signals, and Barricades as required by the Occupational Safety and Health Administration (OSHA) offers extensively detailed guidance on best practice for traffic signs and safety at work zones. |
Meeting OSHA Requirements For Construction Signs |
Of the five most common workplace accidents, a construction site is an environment prone to all five. |
Weight | 4.000000 |
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MUTCD CODE | W1-4L (single lane) W1-4bL (two lanes) W1-4cL (three lanes) |