Expect problems and eat them for breakfast.
--Your friends at LectureNotes

Note for Transportation Engineering 1 - TE1 By Hammad Akbar

  • Transportation Engineering 1 - TE1
  • Note
  • Uploaded
0 User(s)
Download PDFOrder Printed Copy

Share it with your friends

Leave your Comments

Text from page-1

GEOMATERIC DESIGN Sight Distance And Road Alignment

Text from page-2

Traffic System • Components: 1. Vehicular Traffic --Cars, Buses, Trucks, Taxis – 2. Road Conditions-- Motorway, Highway, Urban Arterial, Rural roads 3. Driver Characteristics --Young, Drunk, Experienced, Learner’s License 4. Environmental Conditions-- Sunny, Foggy, Night-time conditions 5. Control Devices-- Signs ,Signal ,Traffic Marking

Text from page-3

Sight distance • Sight Distance. • Distance a driver can see ahead at any specific time • Must allow sufficient distance for a driver to perceive/react and stop, when necessary • Different types of sight distances, • • • • Stopping Decision Passing Intersection

Text from page-4

Sight distance……(ctd.) • Road geometry affects the sight distance available to the driver. • Sight distance, in the context of road design, is defined as "the length of roadway ahead visible to the driver.” • " Sight distance is how far a road user (usually a vehicle driver) can see before the line of sight is blocked by a hill crest, or an obstacle on the inside of a horizontal curve or intersection. • Insufficient sight distance can adversely affect the safety or operations of a roadway or intersection.

Lecture Notes