What is traffic capacity of a highway link? What factors affect the handling capacity of a highway?
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- What are the factors affecting the handling capacity of highways.QUESTION 1 a) Briefly explain the following: i) Level of service of a highway link ii) Design hour volume iii) Peak hour factorYawi Freeway is a four lane road located in the Metro where trucks, buses, and rvs can be found aside from passenger cars. At some point further along the roadway there is a 5.7% upgrade that is 1.5 km long. If the traffic stream has 25% large trucks and buses and 5% recreational vehicles, what is the heavy vehicle adjustment factor?
- List at least three geometric design parameters affected by the following factors? (i) Traffic volume and composition. (ii) Design vehicleThe City of Gainesville and FDOT, in an attempt to proactively address the growing need for capacity in the western area of Gainesville, has identified a potential alignment for a new freeway to UF campus. The FDOT district has contracted you to design this new freeway and identify any additional concerns with this potential freeway. Note that this is an open question, and you may need to make the following assumptions during your work: Lane width (e.g., 12 ft. or 11 ft) Shoulder width (e.g., 6 ft.) Interchange density (e.g., 1 interchange/2 miles) Number of lanes (e.g., 3 or 2 lanes each direction) Hourly volume V= * D*AADT (e.g., =10%, directional distribution D=50%) A design structural number (e.g., SN= 5.0) The following traffic characteristics are expected on this freeway: AADT=30,000 veh PHF=0.95 85% passenger cars Two 2-kip single axles 7% RVs One 10-kip single axle One 24-kip tandem axle 5% single-unit trucks One 12-kip single axle Two 32-kip tandem axles 3% tractor-trailer…What is the capacity of a freeway with 2-lanes in one direction, 10 ft lanes, 1 ft shoulders and 4 ramps within a six-mile stretch? Show Work Correct Answer: 2335
- Oasis Freeway is a four lane road located in the Metro where trucks, buses, and rvs can be found aside from passenger cars. At some point further along the roadway there is a 5.5% upgrade that is 1.3 km long. If the traffic stream has 25% large trucks and buses and 5% recreational vehicles, what is the heavy vehicle adjustment factor?4. TXDOT is working on the design of I-69 north of Victoria. They project a demand volume of 52,000 vehicles per day with a K factor of 0.12 and a directional distribution of 56/44 in level terrain with a target LOS of B and 17% trucks and buses. They plan to have roughly one diamond interchange every 2 miles. What number of lanes is required to achieve these design requirements? What LOS would occur for a typical 4-lane rural interstate design? DHV = AADT * K * D DHV – design hourly volume AADT - average annual daily traffic K- peak hour adjustment factor D- directional distribution (make design conservative)What are the possible Existing Traffic Variation?