The most appropriate location, alignment, and shape of a highway are selected during the design stage. Highway design involves the consideration of three major factors (human, vehicular, and roadway) and how these factors interact to provide a safe highway.
Human factors include reaction time for braking and steering, visual acuity for traffic signs and signals, and car-following behaviour. Vehicle considerations include vehicle size and dynamics that are essential for determining lane width and maximum slopes, and for the selection of design vehicles. Highway engineers design road geometry to ensure stability of vehicles when negotiating curves and grades and to provide adequate sight distances for undertaking passing maneuvers along curves on two-lane, two-way roads.
Using 12d Model, GCS’s engineers seek to address the following considerations in the design process so as to successfully fit a highway to a site’s topography and maintain its safety.[
- Design speed
- Design traffic volume
- Number of lanes
- Level of service (LOS)
- Sight distance
- Alignment, super-elevation, and grades
- Cross section
- Lane width
- Horizontal and vertical clearance
12d Model’s design option is the smarter solution for the design, modification and maintenance of Road and Highway projects.
GCS’s highway and roads design services include:
- Highway, roundabouts and junction/intersection design
- Safety audits
- Feasibility studies
- Conceptual and detailed urban street design