Motorways Route in Thailand. Sustainable Highway Design

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Ada Clarke
5 years ago
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2 Motorways Route in Thailand 2 2

3 Development of Highway Community Speed decreased Open Highway At Grade Median Opening Settlements along the highway (Ribbon Development) Non Control Access or Partial Control Access cause : - Speed decreasing - Longer Travel Time - Lower Level of Service - Reduce Safety of Through Traffic - Accidents 3 3

4 Development of Motorway Grade Seperate Intersection Motorway (Fully Control of Access) Open Highway Collector Distributor Road 4 4

5 Motorway in Rolling Terrain Motorway in Flat Terrain 5 5

6 Geometric Design Standards For main motorway DOH 1996 Parameter Desirable Standard Absolute Lowest Standard A. MAIN SECTIONS OF MOTORWAY Lane Width 3.60 m 3.60 m Outer Shoulder Width 3.00 m 3.00 m Inner Shoulder Width 1.00 m 1.00 m Ultimate Median Width 6.30 m 3.60 m Outer Verge Width 0.50 m 0.50 m Inner Verge Width 0.50 m 0.50 m Minimum Vertical Clearance 5.25 m 5.00 m Maximum Gradient 3% 5% Maximum Superelevation 4% 7% R.O.W 70 m 50 m B. DESIGN SPEED RELATED STANDARDS FOR MAIN MOTORWAY Design Speed 120 kph 100 kph Min Stopping Sight Distance 290 m 210 m Min Horizontal Radius with 4% superelevation 1500 m Min Horizontal Radius with 7% superelevation 720 m Vertical Curvature K Value (crest) Vertical Curvature K Value (sag)

Geometric Design Standards Interchange on motorway DOH 1996 Design Element Unit Desirable Standard Absolute Minimum Standard Loop Ramps Design Speed kph 60 40 Minimum Horizontal Radius m 130 50

7 Geometric Design Standards Interchange on motorway DOH 1996 Design Element Unit Desirable Standard Absolute Minimum Standard Loop Ramps Design Speed kph Minimum Horizontal Radius m MaximumSuperelevation % 6 10 MaximumGradient (up) % 4 6 MaximumGradient (down) % 5 7 Minimum Stopping Sight Distance m Semi-directional Ramps Design Speed kph Minimum Horizontal Radius m MaximumSuperelevation % 6 10 MaximumGradient (up) % 4 5 MaximumGradient (down) % 4 6 Minimum Stopping Sight Distance m Directional Ramps Design Speed kph Minimum Horizontal Radius m MaximumSuperelevation % 6 10 MaximumGradient (up) % 4 5 MaximumGradient (down) % Minimum Stopping Sight Distance m

8 General Motorway Section Without service road With service road 8 8

9 Viaduct Section 9 9

10 Component of Motorway 10 10

11 Design of Service Area Rest Area Service Area Distance 30 km. Max. 50 km. Parkinglot Public Toilet Park Beverages Restaurant Information center Shops Pavilion Emergency Services Gas station The parking area allocated for the MSA based upon the projected traffic after fifteen years 50% of Traffic Volume for Car 35% of Traffic Volume for Trucks 10% of Traffic Volume for Buses 11 11

12 Rest Area Bus Personal Car Truck 12 12

13 Service Area Bus Personal Car Truck 13 13

14 TOLL PLAZA 14

15 Toll Collection System (Closed System) No. of Entry Toll Booths : No. of Entry lanes 3 : 1 No. of Exit Toll Booths : No. of Exit lanes 4 : 1 Rate of allowance from entry Toll Plaza Vehicle/Hr./Lane Rate of allowance from exit Toll Plaza Manual System Vehicle/Hr./Lane Automatic System(with divider) 800 Vehicle/Hr./Lane Automatic System(without divider) 1800 Vehicle/Hr./Lane 15 15

Static Weighing System Overweight trucks will be forced

16 Design of Weighing System Dynamic Weighing System Located before approaching the static Weighing system. Static Weighing System Overweight trucks will be forced to weigh on the static weighing station for more accuracy

17 Undercrossings, Overcrossings, Service Road for Local Communication (Land Seperated by Motorway) 17 Overcrossings with Service Road and 17

18 Design of Street Lighting Design of density of Light. Average of Light density 15 Lux for main Line 20 Lux for intersection and interchange 20 Lux for toll plaza and station 25 Lux for tunnel Low Pressure Sodium High Pressure Sodium Example of Lighting Use standard of The Provincial Electricity Authority and other International Standard 18 18

19 Design of Sign and Marking Use Standard of DOH and Office of Transport and Traffic Policy And Planning 19 19

20 Traffic Control & Surveillance System Emergency Telephone CCTV 20 20

21 Traffic Control & Surveillance System Matrix Sign (MS) Variable Message Sign (VMS) 21 21

22 Noise Barrier 22 22

AASHTO Policy on Geometric Design of Highways and Streets

AASHTO Policy on Geometric Design of Highways and Streets 2001 Highlights and Major Changes Since the 1994 Edition Jim Mills, P.E. Roadway Design Office 605 Suwannee Street MS-32 Tallahassee, FL 32399-0450