PEDESTRIAN ONLY TRAFFIC SIGNALS.

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1 - Traffic Signal Control course - Conference Aston Birmingham - 18 th May to May 21 st 2015

2 What is POTS? POTS is a generic name for pedestrian crossings for stand-alone (Mid Block) locations or a pedestrian stream associated with a junction

3 Why POTS? Changes to the Zebra, Pelican and Puffin Pedestrian Crossings Regulations and General Directions 1997 will phase out the Pelican crossing. This means that the use of the flashing green man / flashing amber will no longer be permitted as part of the light sequence.

4 When and how do we use POTS? The POTS pedestrian crossing can be used for ; Pedestrian Cycle Horse Pedestrians and cycles can be combined to create a TOUCAN crossing.

5 When and how do we use POTS? Far-side or near-side pedestrian signals can be used but NOT in combination. High level repeaters can be used with near-side signals. An unlatched pedestrian demand using kerbside detection can be used with near-side signals ONLY. There is provision for a variable blackout period with far-side signals and extending all red period with near-side signals. Zigzag markings to indicate a controlled zone on the approach and exit are required.

6 FAR-SIDE PEDESTRIAN PEDESTRIAN ONLY TRAFFIC SIGNALS TIMINGS: I PERIOD VEH PED VA MIN = 6 15 FVP = VA MAX = ii 3 sec A R iii 1 3 sec R R iv 4 9 sec stand-alone R G v 3 15 sec R BO vi 0 30 sec R VBO vii 1 3 sec R BO vii 1 3 sec R R ix 2 sec R/A R G R FACILITY MANDATORY OPTIONAL FAR SIDED SIGNALS PEDESTRIAN INDICATOR (2 BOX) AUDIBLE INDICATOR UNIT TACTILE UNIT ABOVE GROUND VEHICLE DETECTION LOOP DETECTORS SPEED DISCRIMINATION/ASSESMENT ON CROSSING DETECTION The Far-Side pedestrian Crossing operates WITHOUT the flashing green man / flashing amber and has a BLACKOUT period following the green man invitation period.

7 FAR-SIDE PEDESTRIAN TOUCAN TIMINGS: I PERIOD VEH PED VA MIN = 6 15 FVP = VA MAX = ii 3 sec A R iii 1 3 sec R R iv 4 9 sec stand-alone R G v 3 15 sec R BO vi 0 30 sec R VBO vii 1 3 sec R BO vii 1 3 sec R R ix 2 sec R/A R G R FACILITY MANDATORY OPTIONAL FAR SIDED SIGNALS PEDESTRIAN INDICATOR (2 BOX) AUDIBLE INDICATOR UNIT TACTILE UNIT ABOVE GROUND VEHICLE DETECTION LOOP DETECTORS SPEED DISCRIMINATION/ASSESMENT ON CROSSING DETECTION The Far-Side TOUCAN crossing operates WITHOUT the flashing green man / flashing amber and has a BLACKOUT period following the green man invitation period. Note that the legend on the push button is different from the Far-Side pedestrian

8 FAR-SIDE PEDESTRIAN with COUNTDOWN - PCATs TIMINGS: I PERIOD VEH PED VA MIN = 6 15 FVP = VA MAX = ii 3 sec A R iii 1 3 sec R R iv 4 9 sec stand-alone R G v 3 15 sec R BO vi 0 30 sec R VBO vii 1 3 sec R BO vii 1 3 sec R R ix 2 sec R/A R G R FACILITY MANDATORY OPTIONAL FAR SIDED SIGNALS PEDESTRIAN INDICATOR (2 BOX) AUDIBLE INDICATOR UNIT TACTILE UNIT ABOVE GROUND VEHICLE DETECTION LOOP DETECTORS SPEED DISCRIMINATION/ASSESMENT ON CROSSING DETECTION The PCATs pedestrian countdown crossing operates with a fixed invitation period (Typically 6s) and a fixed blackout period which is displayed via the countdown signal.

9 NEAR-SIDE PEDESTRIAN - PUFFIN TIMINGS PERIOD VEH PED 1 VA MIN = 6 15 FVP = VA MAX = G R 2 3 sec A R sec R R sec R G sec R R sec R XR 7 or sec/1 3 sec R R 9 2 sec R/A R FACILITY MANDATORY OPTIONAL NEAR SIDED SIGNALS KERB SIDE DETECTION AUDIBLE INDICATOR UNIT TACTILE UNIT ABOVE GROUND VEHICLE DETECTION LOOP DETECTORS SPEED DISCRIMINATION/ASSESMENT ON CROSSING DETECTION The Near-Side pedestrian Crossing operates with an Unlatched pedestrian demand using kerbside detection. There is no BLACKOUT period following the green man invitation period. A fixed or extendable red period runs after the invitation to cross.

10 NEAR-SIDE PEDESTRIAN - TOUCAN TIMINGS PERIOD VEH PED 1 VA MIN = 6 15 FVP = VA MAX = G R 2 3 sec A R sec R R sec R G sec R R sec R XR 7 or sec/1 3 sec R R 9 2 sec R/A R FACILITY MANDATORY OPTIONAL NEAR SIDED SIGNALS KERB SIDE DETECTION AUDIBLE INDICATOR UNIT TACTILE UNIT ABOVE GROUND VEHICLE DETECTION LOOP DETECTORS SPEED DISCRIMINATION/ASSESMENT ON CROSSING DETECTION The Near-Side TOUCAN Crossing can operate with an Unlatched demand using kerbside detection. There is no BLACKOUT period following the green invitation period and a fixed or extendable red period runs after the invitation to cross.