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1. Highway functional classifications include arterial, collector, and local road, respectively for urban and rural areas. 2. Single unit truck is usually used as the design vehicle for rural highways, such as arterial, collector, and local roads. 3. Both cross slope (crowned shape) and superelevation are used in highway design with the purse of facilitating drainage.

1. Highway functional classifications include arterial, collector, and local road, respectively for urban and rural areas. 2. Single unit truck is usually used as the design vehicle for rural highways, such as arterial, collector, and local roads. 3. Both cross slope (crowned shape) and superelevation are used in highway design with the purse of facilitating drainage.

Traffic and Highway Engineering
Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter3: Characteristics Of The Driver, The Pedestrian, The Bicyclist, The Vehicle, and The Road
Section: Chapter Questions
Problem 6P
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1. Highway functional classifications include arterial, collector, and local road, respectively for urban and rural areas. 2. Single unit truck is usually used as the design vehicle for rural highways, such as arterial, collector, and local roads. 3. Both cross slope (crowned shape) and superelevation are used in highway design with the purse of facilitating drainage. 4. The typical traveled lane width is 12ft and traffic capacity gets reduced as the lane width is smaller than 12ft. 5. The sight distance requirement at intersections depends on the traffic control type (no control, stop, yield, or signal control). 6. Fatigue cracking, thermal (low-temperature) cracking, and rutting are typical distresses for flexible pavement; while transverse/corner cracking, spalling, and faulting are typical distresses for rigid pavement. 7. Jointed Reinforced Concrete Pavement (JRCP) can carry more load than Jointed Plain Concrete Pavement (JPCP) because of the steel reinforcement in the JRCP. 8. Based on Superpave specification of asphalt binder, PG 64-22 binder can be used at the location having higher temperature in summer and lower temperature in winter, as compared to PG 70-28 binder. 9. The aggregate in the open-graded friction course is usually uniform-graded; while the aggregate in the dense-grade asphalt mixture is usually well-graded. 10. In AASHTO rigid pavement design, after the loss of support correction, the modulus of subgrade reaction is greater than the modulus of subgrade reaction without correction.
Transcribed Image Text:1. Highway functional classifications include arterial, collector, and local road, respectively for urban and rural areas. 2. Single unit truck is usually used as the design vehicle for rural highways, such as arterial, collector, and local roads. 3. Both cross slope (crowned shape) and superelevation are used in highway design with the purse of facilitating drainage. 4. The typical traveled lane width is 12ft and traffic capacity gets reduced as the lane width is smaller than 12ft. 5. The sight distance requirement at intersections depends on the traffic control type (no control, stop, yield, or signal control). 6. Fatigue cracking, thermal (low-temperature) cracking, and rutting are typical distresses for flexible pavement; while transverse/corner cracking, spalling, and faulting are typical distresses for rigid pavement. 7. Jointed Reinforced Concrete Pavement (JRCP) can carry more load than Jointed Plain Concrete Pavement (JPCP) because of the steel reinforcement in the JRCP. 8. Based on Superpave specification of asphalt binder, PG 64-22 binder can be used at the location having higher temperature in summer and lower temperature in winter, as compared to PG 70-28 binder. 9. The aggregate in the open-graded friction course is usually uniform-graded; while the aggregate in the dense-grade asphalt mixture is usually well-graded. 10. In AASHTO rigid pavement design, after the loss of support correction, the modulus of subgrade reaction is greater than the modulus of subgrade reaction without correction.
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ISBN:
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