Most traffic engineering problems concern themselves with the provision of adequate capacity for the average flow of vehicles in the system, so as to avoid congestion and delay under the average conditions. With the capacity designed only for the average conditions, it is inevitable that congestion occurs in most of the peaking situations. Examples of the occurrence of queues in traffic flows are: signalized intersections, car park, toll booths, bottleneck situations and so on. Because of the easy applicability of the queuing theory to these problems, traffic engineers have been evincing great interest in these subjects recently.

As part of traffic engineering, Queue length survey is  important parameters for determining the capacity and traffic quality of traffic control equipment. A typical queue length survey involves recording the number of vehicles in a queue just prior to the red signal changing to green for one or more legs of an intersection.  When there are multiple lanes, the number of vehicles in the longest queue only, or in each lane separately, can be recorded.

Queue length surveys are typically carried out at a junction to measure the traffic congestion and delays. Queue length at junctions may be measured in vehicle numbers or in meters or yards depending on which is specified.

Queue length surveys can require one of the several techniques to be applied and thus produce varying data outcomes. The objective of the survey in terms of the key output requirement will dictate what form of data collection is most appropriate. The most typical approach is the simple observation of recording either how many vehicles are in a queue or the physical extent of the queue just prior to the red signal changing from red to green (or at the minute change for priority sites), with the data being collected per lane and per approach to the feature/junction.

Arivon’s experienced enumerator staff can ensure the best Traffic Data Collection outcome achieved relative to your traffic survey needs.

Queue Length Survey Methodology by Manual Observation:

• Queue is recorded by the number of vehicles within 5 or 15 minute period and by lane where applicable.
• Actual queue at each 5 or 15-minute interval and by lane where applicable.
• Queue length determined by stationary vehicles at a red light stop up to and including the point where by the light changes to amber and by lane where applicable.
• Queue length to be recorded in metres until the vehicles are out of sight and by lane where applicable are out of sight.

Arivon Technologies  is the best Traffic Survey Company in Australia and New Zealand with well defined processes to extract quality traffic data.  Please get in touch with us for more information. We work with global clients, Traffic survey companies in Germany, USA, UK, Europe, Middle East, Dubai as well or email sales@arivontech.com.