Transport monitoring

How and why we survey traffic, and information about statistics and trends.

We carry out a number of transport surveys to support the development of:

Most of the traffic flow data we collect is produced from automatic traffic counts or manual classified counts.

Traffic survey data requests

If you require further traffic count data relating to specific traffic counters or manual surveys listed in this webpage please specify reference numbers e.g. CP505 or TC5707

Requests should be made to the Transport Monitoring Team.

Data, counts and traffic flow

We carry out a number of varied traffic surveys every year using the following techniques:

  • Automatic Traffic Counters (ATC) of which there are 424 count sites located across the county. These predominately cover the major A and B road network along with some more heavily trafficked unclassified roads (for further information on the M40, A34 and A43 please refer to Highways England)
  • Manual Classified Counts (MCC) are carried out on an adhoc basis either using enumerators or video cameras and are normally used to gather 12h link/turning counts as well as pedestrian and cycle survey data
  • Radars, Tube Surveys and ANPR cameras are also used on an adhoc basis and can provide speed, journey time, class and origin and destination data

2012-16 automatic traffic counter data

Annual Average Daily Traffic (AADT) 2013-17 (xls format, 40Kb). Data has been taken from our network of ATC counters. Data can also be search using the online map. 

2016 manual classified counts

Item Amount
Link count 134
Junction count 104
Journey time 24
Pedestrian/cycle 19
Queue length 41
Other 18
Total 340

List of All MCC Traffic Surveys from 2012 - 16 (xls format, 98Kb)

Cycle monitoring

We carry out a series of automatic and manual cycle counts across the county to monitor the proportion of trips made by bicycle. Manual cycle counts are picked up in the above MCC survey list. Cycle movements can be obtained from the following survey types pedestrian/cycle, link count and junction count.

Automatic Cycle Counts 2012 - 16 (xls format, 48Kb)

Traffic congestion and growth

Congestion to most people means a motionless or slow moving line of vehicles. Congestion has many negative social, environmental and economic impacts.

The Traffic Management Act 2004 (TMA) imposed network management duties on local authorities to tackle congestion. Understanding congestion is therefore a key requirement in being able to tackle it.

We have selected to use a mixture of existing and new indicators to inform us on congestion. See the table below.

  2012 2013 2014 2015 2016
Percentage of Base Network With Congestion During Morning Peak (7.30 - 9.30am). (Further data is available in the hotspot map) 11.9% 9.8% 11.0% 11.0% 10.0%
Total County Wide Road Mileage (million miles) 11.12 11.32 11.47 11.72 11.94
Oxford Average Journey Time per Mile During the Morning Peak (7.30 - 9.30am). Inbound route data is available in the below Oxford journey time graph 6:00 6:11 6:22 6:21 6:26
Number of Motor Vehicles into Central Oxford in the Morning Peak (7.30 - 9.30am) 6800 6600 6500 6600 6900

Hotspot map

Traffic hotspot map (pdf format, 517Kb) highlights the location of congestion on the base network during the morning peak.

Oxford average journey time per mile

Oxford average journey time per mile graph (pdf format, 188Kb) data has been taken from the inbound arterial routs during the Morning Peak (7.30 - 9.30am).

Traffic growth

Average traffic flow in Oxfordshire increased by 1.7 per cent on all roads during 2016 compared to 2015. This is slightly higher than the national average which increased by 1.2 per cent.

B Class roads experienced the least increase in traffic flow of 1.8 per cent while in contrast, traffic flows on the Oxfordshire maintained A roads increased by 2.8 per cent.

Annual traffic growth 2015 - 16 (pdf format, 533Kb)

Traffic monitoring

Oxfordshire County Council's Traffic Control Centre has a CCTV system. There are over 50 cameras deployed around the county's road network, primarily in Oxford and the major population centres. These cameras feed images back to the Traffic Control Centre where they can be viewed on a PC or fed to a wall-mounted array of monitors in front of operational staff.

They are used to monitor congestion and manage incidents. We can alter traffic signal timings, deploy messages to Variable Message Signs, inform travel media, support the county's response to incidents, liaise with the Police Control Centre and inform stakeholders as necessary.

Images from these cameras are stored securely for a short period and can only be released to law enforcement agencies and to insurance companies, as required under the Data Protection Act. No images are released to the public.

Any queries please email