Highway desight manual njdot

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If a physical, environmental or other impediment posed an obstacle to a project, the Design Speed established the limit below which it would be difficult to compromise, in effect, the maximum safe speed. If, however, no such obstacles exist on one or more stretches of road, the design would be to optimum standards, potentially yielding an infinite Design Speed. This could lead to inconsistencies between the Design Speed, posted speed, and desirable vehicle operating speed, and result in drivers making inappropriate decisions.

The NJDOT's Design Philosophy takes into account functional classification, existing or intended land use, and the context of the project, and then uses an appropriately selected Design Speed as the basis for all of the design elements. If there are no physical or environmental impediments to alter the geometry of a roadway, the designer may consider introducing design elements that reinforce and encourage the intended operating speed, which should be based on the needs of all road users.

Our mission is to plan, construct, and maintain the best possible transportation system and State facilities in the most efficient and economical manner utilizing quality management techniques consistent with available resources and mandated controls. This manual should not supersede the application of sound engineering principles by experienced design professionals. This manual does not eliminate the need for other references.

Directives from the NHDOT office and FHWA, books, publications and other related material may need to be referred to for further details, clarification, or interpretations. The use of any of this information for work which is under contract with the NDDOT, does not relieve the user from any obligations assumed by the contract, or from complete and proper fulfillment of the terms of the contract, nor does it entitle the user to compensation for damages of loss which could be attributed to such use.

The user agrees to accept all risks and consequences flowing from or related to the use, retention, distribution, alteration, or deletion of this information. NDDOT will in no instance be liable for any loss of profit or other damage, including but not limited to special, incidental, consequential, or other damages, even if apprised of the likelihood of such damages. Note: This manual provides a written account of how certain activities are performed and is designed to guide and assist staff in performing their functions.