Factors affecting Highway location in urban areas
In general, the sequence of highway location in the urban areas is the same as in rural area i.e. reconnaissance, preliminary location and final location. The location is chiefly dictated by the desired and points of travel, topography, geology and environmental impact.
For urban highways location process, however, is more involved reflecting the complexities of urban conditions.
Among factors that affect selection of highway location are:
1. TRAFFIC / TRIP ORIENTATION AND PURPOSE
Traffic planner from various studies can predict the effect of travel patterns of alternative location proposed highway. Also they analyze the probable effect of new links in highway network.
This permits the location engineer to determine how well alternative locations will fit with the existing network.
2. LAND USE
It is a major factor affecting the pattern of traffic generation is an urban areas. For urban highway the commercial, residential and industrial areas are too considered.
Although the highway should be designed for peak hour volume and the travel patterns vary with time of day, day of weak. Season of the year also has effect in other ways.
Industries and common areas relying heavily on truck transportation need service by arterial routes. Health and safety require avoiding heavy traffic in residential areas. Aesthetic values are also considered in an urban highway.
3. Parking Facility for Vehicles
For highway location in an urban area the existing parking facility should be considered. Ideally the location should be close to existing and potential parking areas to avoiding the amount of travel on existing street.
4. Already existing Transportation System
To increase the overall level of service of transportation in an urban area interference and interaction with other transportation system should be considered.
5. Topography and Geology
Same importance as in rural area. Due to high cost of right of way are certain areas from where the road should not pass.
6. Sociological, Historical and Environmental factors