Traffic analysis for the Railton LTN has been undertaken looking at traffic counts, ANPR compliance, bus journey times and through-traffic analysis. Data has been collected inside LTN areas as well as on the immediate boundary roads that surround an LTN area for 3 assessment stages . This is in line with the monitoring strategy .
Monitoring of the LTNs is being completed by independent transport consultancies as follows;
Data has also been collected from:
The total number of cars, cycles and all motor traffic recorded on streets within the LTN and on boundary roads in April 2021 (for pre- and post-implementation) is provided below. Greater detail is provided within the independent report.
Stage 2 – through-traffic analysis
The below maps are created by analysing GPS and telematics data, and provided by consultant “The Floow”. They were used to identify which roads had high proportions of through traffic. Through traffic means that these journeys were using residential roads as part of a longer journey and were not for accessing anywhere within the LTN.
Below are the before and after through traffic analyses for the Railton LTN. Roads where traffic volumes are high and where the majority of that traffic is passing through are shown in red. The proportion of through traffic has been significantly reduced across the LTN area – and indicated by the shift from red to blue.
Stage 2 – bus journey times
Journey times have first been summarised by route, by taking the total journey time across stop-to-stop links along the corridor and dividing by the length of these links, to give minutes per kilometre.
There has been negligible impact from the LTNs in most cases with the average bus journey times returning to approximately baseline levels or with a marginal improvement in journey times in some cases.
Stage 2 – ANPR compliance
Very few people who live within the LTN have been issued a penalty charge notice. The graph below shows where people, who have driven through the modal filters, have registered their vehicle (which is typically their home address). The vast majority of people driving through the filters are non-local traffic, from outside Lambeth.
Since the Stage 1 monitoring report was published we have received 104 traffic related emails.
Boundary road bus/walking/cycling improvements
Lambeth are currently working on design and options in partnership with TfL to improve conditions on Effra Road, Coldharbour Lane, Dulwich Road and Tusle Hill for buses, walking and cycling. Examples include feasibility of introducing controlled crossings on Effra Road, as well as permitting contraflow cycling on Brixton Water Lane.
We will be providing updates via newsletter updates and our other communication channel as and when we have them.