a List 3 performance indices that are used to assess alterna

a List 3 performance indices that are used to assess alternatives from the viewpoints of the owner and users only.

b. In operation of a highway, what LOS situation that is best for individual users is not necessarily cost-effective for the investing public agency

c. Another Table (not included in the exam) is a list for project evaluation beyond owners and users. List five issues important in assessing the impact of a congestion relief project for a broad stakeholder array.

d If a city has a grid street layout, how can a 1 way street system increase capacity and reduce accidents?

Solution

(1)Answer:- B-tree indexes:- These indexes are the standard index type. They are excellent for primary key and highly selective indexes. Used as concatenated indexes, B tree indexes can retrieve data sorted by the indexed columns. B tree indexes have the following subtypes.

Bitmap index:-

In a bitmap index, the database stores a bitmap for each index key. In a conventional B-tree index, one index entry points to a single row. In a bitmap index, each index key stores pointers to multiple rows.

Function-based indexes:-

This type of index includes columns that are either transformed by a function, such as the UPPER function, or included in an expression. B-tree or bitmap indexes can be function-based. See \"Function Based Index.

(2)Answer:- Traffic refers to vehicle movement. It is measured using vehicle-miles and vehicle-trips, operating costs. It assumes that transport improvements consist of vehicle travel. It is the easiest way to measure transportation and is commonly used in transport planning.

(C) Answer:-Five issues in assessing the impact of a congestion relief project:-

(i) States with effective project management systems address risk in ways that enhance the delivery process. Managing risks involves identification, assessment, quantification, prioritization, and deliberate actions focused on the big-picture objectives.

(ii) The Washington State DOT (WSDOT) Cost Estimate Validation Process (CEVP) program has clearly addressed risks and helped manage project costs and other factors that could have had negative impacts on its capital program.

(iii) Phoenix uses a variety of innovative project delivery tools to mitigate and manage risks. For example, using Construction Manager at Risk (CMAR) for $3 billion in projects has resulted in only one claim.

(iv) State DOTs are managing schedule risks related to the National Environmental Policy Act (NEPA) process by not including projects in the committed Statewide Transportation Improvement Program (STIP) until they emerge with a Record of Decision (ROD). The final delivery of a project is set only after the NEPA process is done.

(v) Missouri has reduced project costs through a “Practical Design” philosophy that relies on the premise that good is good enough, perfection and quality are not synonymous.