Implementing SAFE Junctions for walkers and cyclists without delaying drivers or cyclists or walkers LCC / JRG Oct’14.

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Presentation transcript:

Implementing SAFE Junctions for walkers and cyclists without delaying drivers or cyclists or walkers LCC / JRG Oct’14

Non-Solutions at Major Junctions  Advanced Stop Lines – no use when lights are green – put cycles in position of max. risk – NB all fatal junctions have ASLs  ‘Early Start’ – confusing & misleading – only first 2 or 3 get across – tail and middle : same left hook risk – UNSAFE no matter how many secs start... these are both false ‘facilities’ which do nothing for peds

The Challenge 650 Londoners seriously injured / killed every year... Most on Major roads ; Junctions #1 hazard : Left Hooks Cyclists (& peds) will bypass ‘facilities’ that delay Despite this carnage, TFL have refused to do anything (Jan’12) which might impact ‘capacity’ (motors) Can we resolve this major problem ? in various different situations

Current Situation conflict between cyclists : left turning traffic Green for left turns at same time as straight ahead traffic and straight head cycles (right turns may be held at red) Only 1 (or 2) traffic lights No cycle control Clearly defined traffic lanes Extra traffic lanes = speed Rarely cycle lane into jct (collisions still occur with cycle lane/track) Also risk of right hooks from opposite direction Poor / no ped. facilities Long delays

Proposed Phase 1 for Drivers, Cycles and Walkers (N-S) protected approach lanes for cycles RED for left and right turns GREEN for:  drivers ahead  cycles ahead walkers cross in single phase all same time north & south- bound can GO at same time LEFT HOOKS ELIMINATED then same applies E-W

Requirements / Constraints Early separation of lefts / aheads / rights... Long queue-length approach lanes Bus stop too close to jct >> move it Cannot work on single lane roads IF banned turns, 2 lanes enough Cannot work on roundabouts Cycle lane (track) may be RHS (or 2-way) T-jcts easier than X-roads No cycle only phases No ped.only phases Islands NOT needed

7 Proposed Phase 2 for Turning Traffic RED for Straight Ahead drive/cycle/walk GREEN for : N&S bound left turns E&W bound rights at the same time Cycles: 2-stage right as per Cph, Berlin, and walkers… Then same applies E-W NO IMPACT ON TRAFFIC FLOW TFL Signals agree (May’13) this is ‘’capacity neutral’’

Detail of Cyclists Left / Right Turns Left filter desirable(BJ) before traffic-light If enough space Ped crossing may be informal 2-Stage Right turn All cyclists kerbside No ASLs Cycle light forward

(1) T-Junction e.g. Southwark Bridge(N) may be 4-way cycling & walking (1) 2 3 Early separation Single exit lane only Only 3 phases as now

Notes on T-Junction Design  Early separation of traffic ; lanes signed clearly & early  Islands / bollards / wands enforce ahead-only & turn-only  Islands are NOT for pedestrians – just to separate streams  Position of Cycle-light more important than height 1.E to W cycles GO ahead with E to W straight ahead traffic and W to E straight ahead traffic (1)W to E cycles do not wait at (motor) t-lights but give way / stop when peds. crossing 2.W to S cycles turn right with W to S right turning traffic and S to W left turning traffic 3.N to E cycles turn right with right turning N to E traffic and left turning E to N traffic More ped. green time : cross in 1 phase, not 2 Same no. of t-light phases (3) as now

(2) Major Intersection e.g. Vauxhall ; Mile End n.b. 1 size does not fit all Only 4 phases as now Single exit lane Move bus stop to exit side Bus stop too close ?

Notes on Major X-Roads Design  Single lane (only) for straight ahead traffic – and exit  Move centre-line to right; Less exit lanes needed 1(3) Ahead only & cycles & peds GO together [ Longer green 2(4) then Left (N&S) & Right (E&W) turners GO together  Opposing (N&S) streams can GO together (then E&W)  All cycles approach jct on Left Hand Side via...  Protected cycle (only) lane into jct  Cycle stop line / lights further forward [ No ASL box  2-stage right turn for cycles (as pedestrians)  Bypass for left turning cycles (as pedestrians) - but n.b give way to peds or Stop if Pelican present More ped. green time : cross in 1 phase Same no. of t-light phases (4) as now

BUT Several CSH jcts have 2 minor arms – i.e. not enough lanes to separate all 3 flows Sometimes we can ban turns = less lanes – but some roads are just too narrow...

(3) Primary:Secondary X-roads e.g. CS2 ; Ludgate Circus AHEAD ONLY Secondary roads can have (protected) cycle lanes & cycle-lights AHEAD ONLY ONLY 4 PHASES Single exit lane Long N-S ahead phase (1)

Notes on Primary / Secondary Design Light segregation on secondary [ armadillo Cyclists : 2-phase right turns : all 4 arms [ No ASLs 1.N&S ahead-only is dominant flow [ more green time 2.N-bd Rights & Lefts GO together [ not as (2) above 2. E-bd Cyclists GO ahead safely at same time 3. S-bd Right & Lefts GO together 3. W-bd Cyclists GO ahead safely at same time 2/3 E&W-bd Peds cross safely at same time 4. E&W traffic share same green phase – Ban Right turns out of secondary ? – Or just wait in middle (uncontrolled) More green time for peds & cycles to cross Same no.of phases as now (4) Can also apply at T-junctions...

(4) Major:Minor T-Junction e.g. Harford St(CS2) Long ahead only phase (1) Shorter turning phases (2,3) time-share with Single phase pelicans and Cycles crossing N-S (1) 2 3 Early separation Move bus stop to exit Only 4 phases

(5) 1-way street e.g. A503/St.Pancras Way lanes max N-S 1 wide exit lane

Notes on (narrower) 1-way street note: may also apply elsewhere if only 2 traffic lanes possible  N is No Entry for traffic and cycles 1. E to W cycles & peds and W to E cycles & peds can GO ahead with E to W straight ahead traffic and W to E ahead traffic as per normal (all turners held at red) 2. N to S cyclists can GO ahead at the same time as N to S traffic and N to W right turners (N to E left turns held at red) 3. N to E left turning traffic can GO with W to S right turners and E to S left turners (no conflict into wide 1-way) More green time for peds to cross, safely Only 3 t-light phases required

Implementation Options all arms not always possible / necessary phasing is different for each option Not minor : minor junctions Major T junctions [ 3-way Major : Major cross-roads[ 4-way Major : Minor cross-roads[ 4-way Not Roundabouts – but applicable when rdbt removed Works equally well with 2-way tracks 1-way systems or contraflows also prevents #2 shunts and #3 right hooks

Way Forward  Identify 5 or 6 viable prototype sites  Can-do approach to design / imp.  NB Modelling not required  Implement – within < 6 months  Monitor impact on safety & traffic

Major : Major Candidates A503 (Seven Sisters / Camden Rd) Tower Bridge / Tower Hill Mile End (A1205 Burdett) Vauxhall Bridge(N&S) Camberwell Green A23 (Streatham/Brixton Hill) A23 The Oval (staggered jct) Stockwell A404 Harrow A406 Tottenham Ct Rd Red = in design

Major : Minor Candidates A11 : several secondary jcts A2 : Deptford Bdwy / Church St(S) A2: Old Kent Rd / Albany Rd A201 : Fleet St & Southwark St A214 : Wandsworth Bridge (N) A219 / A40 : Wood Lane A402 : Notting Hill Gate Embankment (most) Bridges

1-way Candidates Drummond Gate Peckham High St / Clayton Rd Rocks Lane : double left-hook Upper Richmond Rd / Clifford Ave A3 / Rookery Rd A315 : Church St Queens Gate & Gloucester Rd