Impact of CS4 on bus journey times, cycling journey times, pedestrian crossing times, and traffic capacity

Closed 19 Nov 2017

Opened 28 Sep 2017

Overview

We have carried out detailed traffic modelling our proposals for CS4 between Tower Bridge and Greenwich. Modelling allows us to predict what travel impact the proposed changes could have on road users, bus passengers, cyclists and pedestrians for the busiest times of the day, with results presented for the morning and evening peak hours.

Despite the sophistication of our models, all traffic modelling is only ever indicative. It is intended to give an idea of where the impacts of changes in journey choice are most likely to occur. It assumes that drivers have perfect knowledge of the network and will always choose the quickest route available.

Our models aim to represent the busiest times of day, predicting journey times during peak hours. These journey times may be mitigated by factors including motorists changing their journeys from peak times to other times; using different modes such as public transport, walking or cycling; and not carrying out journeys at all.

For completeness, the traffic modelling assumes a design for Lower Road that maintains Lower Road Gyratory in its current form with junctions amended to allow for a two-way segregated cycle track on the eastern side of Lower Road. To improve local access, we have also assumed changes to the junction with Lower Road and Plough Way, permitting traffic between Rotherhithe New Road and Plough Way in both directions.

The traffic models also include committed improvements for a second entry into Rotherhithe Tunnel from Rotherhithe Roundabout to ease peak-hour congestion in the local area.

A table showing likely journey time impacts on buses, cyclists, pedestrians and general traffic can be found via the link below. We would actively monitor and manage the road network following implementation ensuring impacts were balanced.

Table of journey times and pedestrian wait times for CS4 (PDF)

If you have any questions or clarifications with regards to our traffic modelling please contact trafficmodelling@tfl.gov.uk.

Have your say on our proposals

 

Buses

Changes to the road layout proposed as part of CS4 would potentially have an impact on the operation of the bus network and on bus passenger journeys. There are eleven bus routes that are directly influenced by this proposal: 1, 47, 188, 199, 225, 381, C10, P12, N1, N199, N381.

Journey time changes for all routes can be seen in the accompanying modelling results table (see link above). The five bus routes that are most significantly affected, either positively or negatively, are described in more detail below.

Bus route 47, between Tower Bridge and Creek Road/Norman Road

In the morning peak, a journey time saving of up to 2 minutes is predicted northbound from Deptford Church Street to Surrey Quays Road and from Lower Road to Tooley Street. There would also be savings of up to a minute from Surrey Quays to Deptford Church Street. However, an increase of up to 2 minutes is expected in the eastbound direction from Tooley Street to Surrey Quays Road.

In the evening peak, bus route 47 is predicted to see an increase in journey time on Jamaica Road going eastbound, of up to 4 minutes. However, a journey time saving of up to 4 minutes is predicted in the same direction between Surrey Quays Road and Creek Road.

Bus route 188, between Tower Bridge and Creek Road/Norman Road

Bus route 188 has a similar journey to bus route 47, and is expected to see comparable delays and benefits.

In the morning peak, a journey time saving of up to a minute is predicted northbound from Creek Road to Surrey Quays Road and from Lower Road to Tooley Street. However, an increase of up to 2 minutes in journey times  is predicted in the eastbound direction from Tooley Street to Surrey Quays Road.

In the evening peak, bus route 188 is predicted to see an increase in journey time on Jamaica Road going eastbound, of up to 2 minutes. However, a journey time saving of up to 4 minutes is predicted in the same direction between Surrey Quays Road and Creek Road.

Bus route 199, between Oxestalls Road and Creek Road/Norman Road

In the morning peak, a journey time saving of up to a minute is predicted on bus route 199 southbound between Oxestalls Road and Creek Road/Norman Road. This is helped by the proposed removal of the signalised junction at Oxetalls Road, which would be replaced by a mini roundabout.

In the northbound direction towards Oxestalls Road, an increase in journey time of up to 2 minutes is predicted. The proposed reduction of northbound bus lanes and changes at the junction with Deptford Church Street largely influence this.

In the evening peak, a journey time saving of up to 4 minutes is predicted in the southbound direction from Oxestalls Road to Creek Road, while an increase in journey time of up to a minute is predicted in the northbound direction from Creek Road to Oxestalls Road.

Bus route P12, between Southwark Park Road and Lower Road

In the morning peak, the bus route P12 is predicted to experience an increase of up to 3 minutes in journey time from Southwark Park Road towards Lower Road and up to a minute journey time increase from Lower Road to Southwark Park Road.

In the evening peak, the P12 is predicted to experience an increase of journey time of up to 6 minutes from Southwark Park Road to Lower Road. This is primarily due to a reduction in green time for road traffic emerging from Southwark Park Road, as all traffic would be held on a red signal while cycle traffic crosses from the southern to northern side of Jamaica Road.

Bus route 381, between Tooley Street and Brunel Road by Rotherhithe Tunnel

In the morning peak, a journey time saving of up to a minute is predicted for the 381 going from Brunel Road by Rotherhithe Tunnel to Tooley Street.

In the evening peak, a journey time increase is expected of up to 2 minutes on the same section.

 

Cycling

CS4 provides 5.3 km of new segregated two-way cycle track, providing increased safety and comfort for cyclists. At the junctions of Deptford Church Street, Surrey Quays Road and Abbey Street, the cycle track bypasses traffic lights to minimise delay.

At most other traffic light controlled junctions, cyclists would proceed in their own segregated track at the same time as road traffic for efficiency. However, at the proposed crossover points (at the junctions with Southwark Park Road and Plough Way), cyclists would have to wait for their own stage to proceed.

In the morning peak, cycle journeys between Tooley Street and Southwark Park Road are predicted to increase by up to a minute. However, further south, between Evelyn Street and Creek Road, savings of up to a minute are predicted. Northbound journey times see a larger improvement, with a journey time saving of up to 4 minutes predicted between Creek Road and Oxestalls Road.

In the evening peak, cycle journeys are expected to see an overall improvement in journey times along the route as cyclists no longer have to compete with general traffic or buses. Journey time savings of up to 3 minutes are predicted eastbound between Southwark Park Road and Surrey Quays Road, in addition to journey time savings of up to 4 minutes between Oxestalls Road and Creek Road.

 

Walking

The proposals include numerous enhancements to signalised pedestrian crossing facilities throughout the length of the scheme. Overall, crossing times remain similar to existing situation, although several locations feature more pronounced changes.

The existing staggered pedestrian crossings at Bermondsey Station would be replaced by a simplified single pedestrian crossing, reducing the typical time to cross the road by over a minute and providing a direct and safe facility.

We would also introduce additional signalised pedestrian crossings at the junctions of Creek Road/Deptford Church Street and Jamaica Road/Abbey Street. However, there would be a slight increase in pedestrian crossing time due to the introduction of new cycle movements through the junctions.

Improvements to the signalised junction at Jamaica Road/Tanner Street also see a reduction in pedestrian crossing time of over a minute in the evening peak.

 

General traffic

With some reallocation of road space and reduced traffic capacity to provide the new cycle track, some journey time changes are expected.

In the morning peak, northbound traffic is predicted to see an increase in journey time of up to 2 minutes between Creek Road and Oxestalls Road. However, a journey time saving of up to 2 minutes is expected northbound between Oxestalls Road and Surrey Quays Road, and up to a minute between Surrey Quays Road and Jamaica Road.  

Eastbound traffic in the morning peak is expected to see an increase in journey time of up to 2 minutes from Tooley Street to Surrey Quays Road and from Surrey Quays Road to Creek Road.

With the loss of the bypass lane for general traffic between Lower Road and Jamaica Road, Rotherhithe Roundabout will become busier.   A journey time increase of up to 6 minutes is predicted for traffic emerging from Surrey Quays peninsula via Brunel Road both in the morning and evening peaks.

In the evening peak, northbound traffic is expected to see an increase in journey time of up to 2 minutes between Creek Road and Oxestalls Road. However a journey time saving of up to a minute is expected westbound between Surrey Quays Road and Jamaica Road.

Eastbound traffic in the evening peak is predicted to see an increase in journey time of up to 6 minutes from Tooley Street to Surrey Quays Road. However, some routes such as Lower Road to Creek Road southbound are expected to see a journey time saving of up to 3 minutes. This is partly due to the simplification of the signalised junctions along Evelyn Street, combined with traffic reassigning to alternative routes around the scheme area as a result of capacity reductions along Jamaica Road.

Details of how we expect traffic route choice to be influenced by the scheme can be found in the ‘Traffic reassignment’ section below.

To maximise performance for all road users, we are investing in advanced traffic signal technology to allow us to optimise the signal timings for all road users at every turn of the lights. We are also working to improve road user information in order for our customers to make informed journey choices before they travel.

 

Traffic reassignment

General note on traffic assignment modelling

We use traffic assignment modelling to illustrate the predicted state of the road network in 2021. The model captures additional network demand and completed or planned projects across London in the coming years to understand how route choice and traffic volumes may change.

It is important to note that our traffic assignment modelling is only ever indicative. It is intended to give an idea of where the impacts of changes in journey time and route choice are most likely to be felt. It assumes that drivers have perfect knowledge of the network and will always choose the quickest route available. The reassignment is a picture of what the network may look like once the on-street proposals and associated driver behaviour has had a chance to bed in.

We would actively monitor and manage traffic conditions on the roads following the delivery of the scheme, and would aim to mitigate and manage traffic reassignment following implementation. We are investing in advanced traffic signal technology to allow us to better manage traffic depending on differing conditions at any given time, and we are working to improve road user information so customers can make informed journey choices before they travel.

A200 Jamaica Road / Lower Road / Rotherhithe Roundabout

The highway changes proposed for CS4 may lead to some traffic re-routing. The scheme provides improved facilities for cyclists which in turn takes road space and capacity away from the main traffic corridor (A200) making it less attractive as some journeys would become slower for motor traffic. This may encourage drivers to seek alternative routes.

Southwark Park Road

Traffic from the A2 heading for Rotherhithe Tunnel northbound would typically route via Rotherhithe New Road, Hawkstone Road and Lower Road or via Raymouth Road, Southwark Park Road and Jamaica Road as these are the quickest and most direct choices available. With the proposed changes at Lower Road Gyratory and Rotherhithe Roundabout the modelling suggests some additional traffic may prefer to use Southwark Park Road.

St James’s Road

Due to the changes on the A200 Jamaica Road/Lower Road/Rotherhithe Roundabout, more traffic is predicted to turn into St James’s Road from Jamaica Road to travel further south as a quicker alternative route.

Additional traffic from the A2 is also predicted to route northbound via St James’s Road, Old Jamaica Road and Druid Street to reach the Inner Ring Road south of Tower Bridge.

Creek Road / A200

Due to a change in road space and performance in the Deptford area, some traffic is predicted to use alternative routes to Deptford Church Street, such as via Greenwich High Road, New Cross Road or Creekside.

Areas

  • Greenwich
  • Lewisham
  • Southwark

Audiences

  • Anyone from any background

Interests

  • Cycling
  • Roads