1. Eliminating Left & Right Secondary X-roads where only 2 lanes possible without delaying traffic , nor cycles , nor pedestrians
LCC July’15

2. Non-Solutions at BUSY Junctions
Advanced Stop Lines
no use when lights are green
put cycles in max. risk position
NB all fatal junctions have ASLs
‘Early Start / Release’
confusing & misleading
only first 3 or 4 get across
tail and middle : same left hook risk
UNSAFE no matter how many secs start
... these are both false ‘facilities’

3. Phasing @ Secondary X-Roads space for 2 traffic lanes but not 3
phase 1 : phase 2 :
No conflicts ; No delays
phase 3 : phase 4 :
Sequence optimal for 2-stage rights (no wait). Diagram shows which can GO – all others held at red
Pedestrians share phases with Cycles
Any phase can be long / short

4. Secondary X-roads : only 2 T-Lanes on Approaches
Single exit lane ; Move centre line 3 4 3 2 3 3 4 2 1 1
NB Not to scale ; all splitter islands optional 4 1 2 1 4
Left filters optional
Single exit lane; Move centre line
Only 4 phases
Secondary roads can have cycle lights & (protected) lanes too

5. Secondary (2-Lane) X-roads - Design Notes
Cyclists : 2-stage right turns : all 4 arms [ next phase 1>2...
N-bd Ahead + Right GO together [ dominant a.m
and E to S left turners [ cycle + motor
N-bd Cyclists & Peds cross at same time
E-Bd Ahead & Right GO together [ dominant p.m
and W to N left turners [ cycle + motor
E-bd Cyclists & Peds cross at same time
Repeat above for S-bd Ahead & Right [ +peds +cycles
4. Repeat above for W-bd Ahead & Right [ +peds +cycle
No conflicts between modes in any phase
No delays to traffic flows [ nor ped nor cycle
4 phases but NOT all same length
also works equally well with 2-way tracks

6. Applicable Widely : Candidates
Camberwell Green
A205 / Brockley Rise
Cambridge Heath Rd
Lea Bridge Rd 3 jcts
... and many others
Red = in design