What should a driver look for when selecting a transportation design company? Highway Design companies often offer a wide range of services that can enhance the safety, efficiency and comfort of interstates, highways and freeways. When planning a project, drivers should first consider where and how the future interchange or turning lane might be located. Depending on the volume of traffic expected at each location, a careful evaluation of the existing conditions must be made to determine which physical features should be incorporated in the new interchange or turn lane.
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One important factor to remember when considering an interchange is that the primary purpose of the structure is to provide a safe and functional interchange. Therefore, any changes to the existing physical conditions or design should be scrutinized and analyzed to ensure that these changes do not negatively impact the safety and efficiency of the current interchange. For example, a highway design company may recommend the removal of the on-ramp to the northbound lanes of the freeway, and add a center turn lane on the southbound side of the freeway. However, if this new configuration provides added safety benefits without negatively impacting highway travel, the company may recommend this change.
Another important factor to keep in mind is the physical dimensions of the interchange or turn lane. Most modern turnarounds include a wide entry and exit ramp for vehicle flow in both directions. In some cases, ramps will be positioned along the inside edge of the inside curve of the express lanes to provide more room for vehicles entering or exiting the freeway. Although some modern express lanes provide more room for drivers to enter or leave the freeway, some of these may also include a safety center turn bar that directs drivers safely around potential problems such as oncoming traffic, left turns from multiple directions, or other drivers moving into or out of the way of the express lanes.