FHA Signal Timing On A Shoestring

More documents

Recommendations

Info

Offset Issues ......................................................................................................................24 One-way Offset ............................................................................................................25 Two-Way Offsets (Kell Method) ..................................................................................26 Split Issues ........................................................................................................................28 Critical Movement Method..........................................................................................28 IV. Local Controller Parameters ............................................................................................30 Actuated Controller Timing Principles .............................................................................30 Basic Actuated Phase Settings..........................................................................................31 Minimum Green (Initial).............................................................................................31 Extension (Passage).....................................................................................................32 Maximum Green..........................................................................................................32 Yellow ..........................................................................................................................33 Red ...............................................................................................................................33 Pedestrian Parameters......................................................................................................33 Walk.............................................................................................................................34 Flashing Don’t Walk....................................................................................................34 Volume-Density Phase Settings........................................................................................34 Variable Initial ............................................................................................................34 Gap Reduction .............................................................................................................35 Controller Timing Parameters Summary .........................................................................35 V. Coordination Timing Issues...............................................................................................37 Resonant Cycle ..................................................................................................................37 Intersection Categories .....................................................................................................38 Number of Timing Plans ...................................................................................................39 Using the Tool Box ............................................................................................................39 VI. Signal Timing Examples ..................................................................................................41 Moderate Signal Timing Budget .......................................................................................41 1 - Identify the System Intersections ..........................................................................41 2 - Collect and Organize Existing Data ......................................................................41 3 - Conduct Site Survey...............................................................................................41 4 - Obtain Turning Movement Data............................................................................42 5 - Calculate Local Timing Parameters ......................................................................42 6 - Identify Signal Groupings ......................................................................................42 7 - Calculate Coordination Parameters.......................................................................42 iv
8 - Install and Evaluate New Plans ............................................................................42 Modest Signal Timing Budget...........................................................................................43 1 - Identify the System Intersections ..........................................................................43 2 - Collect and Organize Existing Data ......................................................................43 3 - Conduct Site Survey...............................................................................................44 4 - Obtain Turning Movement Data............................................................................44 5 - Calculate Local Timing Parameters ......................................................................44 6 - Identify Signal Groupings ......................................................................................44 7 - Calculate Coordination Parameters.......................................................................45 8 - Install and Evaluate New Plans ............................................................................45 Minimum Signal Timing Budget ......................................................................................45 1 - Identify the System Intersections ..........................................................................45 2 - Collect and Organize Existing Data ......................................................................45 3 - Conduct Site Survey...............................................................................................45 4 - Obtain Turning Movement Data............................................................................46 5 - Calculate Local Timing Parameters ......................................................................46 6 - Identify Signal Groupings ......................................................................................46 7 - Calculate Coordination Parameters.......................................................................46 8 - Install and Evaluate New Plans ............................................................................47 v
Page 1 and 2: SIGNAL TIMING ON A SHOESTRING Publi
Page 3: Technical Report Documentation Page
Page 8 and 9: I. Introduction Research and experi
Page 10 and 11: Trigger Event Determine Type of Tim
Page 12 and 13: Descriptive Data All signal optimiz
Page 14 and 15: coordinated offsets. Although Trans
Page 16 and 17: II. Signal Timing Process There are
Page 18 and 19: The basic intersection checklist in
Page 20 and 21: operation is that some of the inter
Page 22 and 23: III. Signal Timing Tool Box When mo
Page 24 and 25: 6. Record the time on the stop watc
Page 26 and 27: Major Traffic Flows Another factor
Page 28 and 29: 1. Estimate the lost time per cycle
Page 30 and 31: Where: (1) Cycle = 2 * Distance / S
Page 32 and 33: Offset Figure 2. Offset change impa
Page 34 and 35: Figure . Kell Method (continued) 7.
Page 36 and 37: four. Multiply the number of critic
Page 38 and 39: Once an actuation is received from
Page 40 and 41: Yellow The yellow interval follows
Page 42 and 43: Added Initial - This interval times
Page 44 and 45: V. Coordination Timing Issues There
Page 46 and 47: secondary intersections usually hav
Page 48 and 49: VI. Signal Timing Examples One way
Page 50 and 51: studies at the critical intersectio
Page 52 and 53: 7 - Calculate Coordination Paramete
Page 54 and 55: Using the average distance between

FHA Signal Timing On A Shoestring

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?