Documents
Resources
Learning Center
Upload
Plans & pricing Sign in
Sign Out

Traffic signal design I (PowerPoint)

VIEWS: 59 PAGES: 42

									      Road Markings

Transportation Systems Engineering
              Introduction
• Guide and control traffic on a highway
• Ensure safe, smooth and harmonious flow
  of traffic

• Types:
    – Longitudinal markings
    – Transverse markings
    – Object markings
    – Special markings

20080806       Fundamental parameters of traffic flow   2 / 42
           Longitudinal markings
• Placed along the direction of traffic on road
  surface.

• Provided for separating traffic flow in the
  same direction.

• Predominant color used is white.

• Yellow color is used to separate the traffic
  flow in opposite direction

20080806       Fundamental parameters of traffic flow   3 / 42
           Longitudinal markings
• Lines can be either broken, solid or double solid.

• Broken lines are permissive in character and allows
  crossing with discretion

• Solid lines are restrictive in character and does not
  allow crossing except for entry or exit from a side
  road or premises or to avoid a stationary
  obstruction.

• Double solid lines indicate severity in restrictions



20080806          Fundamental parameters of traffic flow   4 / 42
           Longitudinal markings
• Types
    – Centre line
    – Traffic lanes
    – No passing zone
    – Warning lines
    – Border or edge lines
    – Bus lane markings
    – Cycle lane markings.



20080806            Fundamental parameters of traffic flow   5 / 42
           Longitudinal markings
• Centre line
    – Separates the opposing streams of traffic


    – No centre line for roads having width less
      than 5 m and having more than four lanes


    – Marked with either single broken line, single
      solid line, double broken line, or double solid
      line


20080806         Fundamental parameters of traffic flow   6 / 42
           Longitudinal markings




             Centre line marking for a two lane road




20080806        Fundamental parameters of traffic flow   7 / 42
              Longitudinal markings




           Centre line and lane marking for a four lane road




20080806              Fundamental parameters of traffic flow   8 / 42
           Longitudinal markings




            Double solid line for a two lane road




20080806         Fundamental parameters of traffic flow   9 / 42
           Longitudinal markings




           Centre barrier line marking for four lane road




20080806           Fundamental parameters of traffic flow   10 / 42
           Traffic Lane Lines
• Subdivision of wide carriageways into
  separate lanes

• Eliminate confusion and facilitates turning
  movements

• Help in increasing the capacity of the road in
  addition ensuring more safety

• Single broken lines of 100 mm width

20080806       Fundamental parameters of traffic flow   11 / 42
               Traffic Lane Lines




       Lane marking for a four lane road with solid barrier line




20080806              Fundamental parameters of traffic flow       12 / 42
                Traffic Lane Lines




       Traffic lane marking for a four lane road with broken centre line




20080806               Fundamental parameters of traffic flow         13 / 42
            No passing zones
• Provided on
    – Summit curves
    – Horizontal curves
    – Where overtaking maneuvers are prohibited


• Marked by a solid yellow line along the
  centre or a double yellow line



20080806        Fundamental parameters of traffic flow   14 / 42
               No passing zones
  Barrier line marking for a four lane road




    Barrier line marking for a                      No passing zone marking
          four lane road                              at horizontal curves



20080806               Fundamental parameters of traffic flow             15 / 42
           No passing zones




20080806     Fundamental parameters of traffic flow   16 / 42
              Warning lines
• Broken lines with 6 m length and 3 m gap




           Warning line marking for a two lane road


20080806       Fundamental parameters of traffic flow   17 / 42
                 Edge lines
• Delineate the limits upto which the
  driver can safely venture

• At least 150 mm from the actual edge of
  the pavement

• Painted in yellow or white

• Preferably light reflective

20080806      Fundamental parameters of traffic flow   18 / 42
               Examples




20080806   Fundamental parameters of traffic flow   19 / 42
               Examples




20080806   Fundamental parameters of traffic flow   20 / 42
             Examples




20080806   Fundamental parameters of traffic flow   21 / 42
           Channelizing lines




20080806     Fundamental parameters of traffic flow   22 / 42
           Transverse markings
• Across the direction of traffic
• At Intersections


• Stop line markings
• Markings for pedestrian crossing
• Direction arrows




20080806      Fundamental parameters of traffic flow   23 / 42
           Transverse markings
• Stop line




            Stop line marking near an intersection




20080806         Fundamental parameters of traffic flow   24 / 42
           Transverse markings
• Pedestrian crossings




           Pedestrian marking near an intersection

20080806         Fundamental parameters of traffic flow   25 / 42
               Examples




20080806   Fundamental parameters of traffic flow   26 / 42
               Examples




20080806   Fundamental parameters of traffic flow   27 / 42
           Examples-Yield




20080806    Fundamental parameters of traffic flow   28 / 42
           Examples-Crosswalk




20080806      Fundamental parameters of traffic flow   29 / 42
           Examples-Crosswalk




20080806      Fundamental parameters of traffic flow   30 / 42
     Examples- Diagonal Crosswalk




20080806    Fundamental parameters of traffic flow   31 / 42
Rotary




 20080806   Fundamental parameters of traffic flow   32 / 42
           Transverse markings
• Directional arrows
    – Used to guide the drivers in advance over the
      correct lane




20080806        Fundamental parameters of traffic flow   33 / 42
               Object marking
• Objects within the carriageway
    – Traffic islands, raised medians etc.
    – Marked by not less than five alternate black
      and yellow stripes
    – Stripes should slope forward at an angle of 45
      with respect to the direction of traffic
    – Uniform stripes with not less than 100 m width
      to provide sufficient visibility



20080806         Fundamental parameters of traffic flow   34 / 42
               Object marking
• Objects adjacent to carriageway
    – Subway piers and abutments, culvert head
      walls
    – Alternate black and white stripes at a forward
      angle of 45 with respect to direction of traffic
    – Poles close to carriageway painted up to a
      height of 1.25 m above road level




20080806         Fundamental parameters of traffic flow   35 / 42
               Object marking




           Marking for objects adjacent to the road way



20080806           Fundamental parameters of traffic flow   36 / 42
            Word messages
• Information to guide, regulate, or warn
  the road user


• Capital letters


• STOP SLOW, SCHOOL, RIGHT TUN
  ONLY



20080806      Fundamental parameters of traffic flow   37 / 42
                    Word messages




           Typical dimension of the character T used in road marking



20080806                 Fundamental parameters of traffic flow        38 / 42
Examples- Elongated Word Messages




 20080806   Fundamental parameters of traffic flow   39 / 42
              Hazardous location
• Width transition in the carriageway
  should be of 100 mm width
• Converging lines shall be 150 mm wide




           Approach marking for obstructions on the road way




20080806            Fundamental parameters of traffic flow     40 / 42
    Examples-Marking obstructions




20080806    Fundamental parameters of traffic flow   41 / 42
     Thank You

tomvmathew@gmail.com

								
To top