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  2. ET-Plus Guardrail - Wikipedia

    en.wikipedia.org/wiki/ET-Plus_Guardrail

    ET-Plus with 4-inch channel [9] [10]. On March 6, 2012, Joshua Harman, a Virginia guardrail engineer and a co-owner of a Trinity's competitor, was whistleblower in a federal suit which accused Trinity of failing to notify the Federal Highway Administration (FHWA) of a change of size of the end piece from five to four inches.

  3. Manual on Uniform Traffic Control Devices - Wikipedia

    en.wikipedia.org/wiki/Manual_on_Uniform_Traffic...

    The Manual on Uniform Traffic Control Devices for Streets and Highways (usually referred to as the Manual on Uniform Traffic Control Devices, abbreviated MUTCD) is a document issued by the Federal Highway Administration (FHWA) of the United States Department of Transportation (USDOT) to specify the standards by which traffic signs, road surface markings, and signals are designed, installed ...

  4. Traffic barrier - Wikipedia

    en.wikipedia.org/wiki/Traffic_barrier

    Traffic barrier with a pedestrian guardrail behind it. Traffic barriers (known in North America as guardrails or guard rails, [1] in Britain as crash barriers, [2] and in auto racing as Armco barriers [3]) keep vehicles within their roadway and prevent them from colliding with dangerous obstacles such as boulders, sign supports, trees, bridge abutments, buildings, walls, and large storm drains ...

  5. Interstate 840 (Tennessee) - Wikipedia

    en.wikipedia.org/wiki/Interstate_840_(Tennessee)

    In 2015, the Federal Highway Administration (FHWA) and the American Association of State Highway and Transportation Officials (AASHTO) approved TDOT's request to redesignate SR 840 as I-840 as part of its integration into the Interstate Highway System. On August 12, 2016, TDOT announced that the route had officially been redesignated as I-840 ...

  6. Guide rail - Wikipedia

    en.wikipedia.org/wiki/Guide_rail

    According to the US Federal Highway Administration, the terms guardrail and guiderail are synonymous. [5] Several types of roadway guide rail exist; all are engineered to guide vehicular traffic on roads or bridges. Such systems include W-beam, box beam, cable, and concrete barrier.

  7. Cost to make railroad crossings safer is skyrocketing. It ...

    www.aol.com/cost-railroad-crossings-safer...

    The commission approved $402,613 in funding and said “construction may commence at once.” Among the documents was a breakdown of what the railroad submitted for the cost of the project.

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