About Us.
Krish Al-Arabia has a large team of highly skilled survey staff capable of accurately undertaking traffic data collection project of any size and complexity.
Our experience staff can help you with the survey design, to ensure the best outcomes are achieved relative to your survey needs.
Our commitments is to deliver cost-effective data of the highest quality, present in a format that is practical to you.
Automatic Traffic Count Survey
Traffic count and classification surveys involve determining the number of vehicles for a particular vehicle classification type.
Data is typically collected for 24 hours for 7 days, bity this can be customized to suit your individual requirements. Trucks can be further classified into their hazardous goods carry code and other vehicle can be classified based on their public transport functionality.
Count data shall include the following 5 vehicle classes, which are:
• Cars, Pickups, Vans and SUVs.
• Single Unit 2-Axles Truck or Bus (short)
• Single Unit 3 or 4 Axles Truck or Bus (long)
• Single Trailer 5 or more Axles Truck
• Multi-trailer
Data collection techniques include:
• Data loggers
• Video camera
• Manual field observation.
Our experienced staff can help you with the survey design, to ensure the best data collection outcomes are achieved relative to your survey needs.
Intersection Turning Movements
Accurately recording how many vehicles use an intersection, and what maneuvers they perform, requires specialist expertise.
Data is typically collected for 9 hours for 3 days. The peak hours will be based on the Vehicle classification survey.
Our experienced staff can assist you with survey design to ensure the best outcomes are achieved to meet your needs. Data is typically collected into 15 minute blocks for reporting purposes, but these can be customised to suit your individual requirements.
Count data shall include the following 5 vehicle classes, which are:
• Cars, Pickups, Vans and SUVs.
• Single Unit 2-Axles Truck or Bus (short)
• Single Unit 3 or 4 Axles Truck or Bus (long)
• Single Trailer 5 or more Axles Truck
• Multi-trailer
Data is collected using Video Cameras.
The counting period lasts for three days, consisting of two regular weekdays and one weekend, ensuring that there are no special events or functions in the survey area. Turning movement counts are not permitted during vacations, public holidays, or school breaks.
Mid -block Surveys
Mid-block Counts
The volume of vehicles crossing an arbitrary line, some distance from an intersection.
A typical cost effective solution is counting vehicles split into 2 categories; Cars & Trucks, in 15 minute time blocks. Trucks can be further classified by Hazardous goods carry code.
Data collection techniques may include:
• Data loggers
• Video Camera
Data collection techniques include:
• Data loggers
• Video Camera
• Manual field observation
• Mid-block Classifications
• Classification surveys involve the recording of vehicle type.
Classification categories may be as simple as 'car' and 'truck'.
• Data is typically collected into 15 minute block, but these can be customised to suit your needs.
Our experienced staff can help you with the survey design, to ensure the best outcomes are achieved relative to your survey needs.
Over Limit
Vehicle Surveys
Purpose of Over Limit Vehicle Surveys
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Identify vehicles that exceed load or height limits on roads or bridges.
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Common limits include:
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4-ton restrictions in residential areas.
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10-ton limits on older bridges.
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There are instance where this historical data is too late and what you require is an electronic output to trigger something else, e.g. a warning sign where a limit is exceeded. We can modify its survey technology to your specific needs.
The typical limit applied to vehicle is a load limit, which may be say a 4 ton restriction to a residential precinct, or a 10 ton limit to an old bridge. Our data loggers can detect these event and report as an historical event.
Limits may also be height, but unlike length and implied load surveys, where the pavement is our workplace, height requires sensors mounted vertical, which for reasons of inconspicuity, vandalism and logistics restricts the ideal locating of such surveys, but we can locate sens.
Queue Surveys
Queue delay surveys involve the notation of sample vehicle arrival times at an intersection, and then their departure times, as they cross the stop line on the green phase. A variety of techniques can be used to collect queue delay data; generally a manual observation technique is used. In a single cycle, a single observer may track a number of sample vehicles.
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.
Another variation is to have pre-set distance makers and record the times at which the queue meets that marker
Red Light +
Rail Runner Surveys
Three distinct techniques exist for undertaking surveys involving vehicles that run red lights or rail crossing signals and barricades.
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Manual observation
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Video Camera
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Data Logger
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We can apply the application of its data loggers to detect traffic signals on a red phase, either by direct connect to the signals or passive optical sensing of a red signal, in conjunction with an axle sensor on the departure side of a stop line.
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This system can identify the frequency of red light running events and or usage of a second axle sensor post stop line can classify the vehicle type and speed post stop line. The more useful information at this instant is vehicle type and knowing if a car or type derivative is at fault.
School
Crossing Surveys
Pedestrians
Typically, school crossing surveys involve the recording of pedestrians categorized into (at least) "child" and "adult" and often children are then further classified into the categories of "primary school" and "secondary school".
The number of prams/pushers can also be surveyed.
Vehicles
When undertaking surveys for a proposed school crossing, vehicle volumes will normally be required, and this survey can be undertaken either manually or using data loggers. The benefit of using a data logger (over a manual surveyor) is that vehicle speed data can be captured simultaneously.
Speed Surveys
Collection techniques can include:
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Radar Speed gun
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Data Logger
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Recorder Time of vehicles between 2 known points, e.g. record registration plate and time.
Speed surveys are usually undertaken midblock, such as to obtain the maximum speed profile. Location does sometime vary or become close to an intersection if there is a unique data need often associated with a road safety issue
Travel Time Surveys
Travel Time Surveys involve the measurement of a vehicle's time with respect to its distance traveled.
Accurate data collection for travel time surveys can be achieved through various methods but it is important to match the most appropriate tools for the specific task at hand.
Our experienced staff can help you with the survey design, to ensure the best outcomes are achieved relative to your survey needs.
Trip Generation
Rates
Trip generation rates are usually assigned to various specific land uses.
Surveys are undertaken by either manual observation or data logger technique for determination of generation rates at specific land uses.
These surveys can range from single small stores to very large regional shopping centers.
The basic form of this survey type is the recording of mere count data ingressing and/or egressing a land use.
Land use surveys may entail more complex interview techniques to determine mode choice and stated preferences including parking proximity and trip purpose.
Pedestrian
Movement Surveys
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Pedestrian behaviour and attitudinal interview surveys
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Conflict point counts
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Pedestrian origin-destination surveys
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Trip purpose surveys
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Gap and headway analysis at crossings, midblock, or at other points of interest
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Intersection surveys usually count pedestrian volumes crossing each leg of an intersection, split into each approach direction. Further sub-categorisation can include break down into adult, child (all or primary and secondary), senior, disabled, pram, pusher, mobility walker and shopping trolley.
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Midblock surveys of pedestrians can be undertaken to support the need for a general pedestrian or school crossing facility.
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Path utilisation surveys, including on off-road tracks, can be undertaken manually or using a variety of data logger techniques and sensing applications.
Our experienced staff can help you with the survey design, to ensure the best outcomes are achieved relative to your needs.
Data collection and reporting methods can be customised to suit your individual requirements and we are able to print all interview materials and provide quick turnaround of reports.
Parking Surveys
Our experienced survey staff capable of accurately undertaking:
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Inventory studies
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Duration of stay studies
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Occupancy studies
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Utilisation studies
Our experienced staff can help you with the survey design, to ensure the best outcomes are achieved relative to your survey needs. Data collection and reporting methods can be customised to suit your individual requirements.
Briefly describe your degree and any other highlights about your studies you want to share. Be sure to include relevant skills you gained, accomplishments you achieved or milestones you reached during your education.
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Parking Stations
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Can be economically surveyed by coverage of entrance and exits only, where discrete floor utilisation is not required, else a floor walk coverage is required.
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Parking Accumulation Surveys
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A count of the number of vehicles parked within a defined zone at regular, predetermined time intervals. Typically a field observer walks a circuit through the car park counting and recording the number of cars present per zone on each pass.
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Electronic data loggers can also be utilised for closed networks, where the volume of vehicles entering and leaving the network and core are recorded and the variation of in and out movements are used to calculate a moving accumulation estimate.
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Parking zones usually define a specific parking product and are restricted in terms, e.g., Disabled Parking, Loading Zone, 2P, Taxis or Resident Parking. Each zone has a unique identifying number or space code.
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Survey costs are proportional to the frequency of visitation and recording, so there is a matching of minimum data need versus budget availability to optimise a survey plan.
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Parking Duration Surveys
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Undertaken when you need to know how long vehicles are remaining parked.
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This survey typically works to cycle times of an observation and recording of a part of the vehicle registration number plate and noting by an allocated zone identifier. A zone identifier again identifying a unique special parking condition or locale of parking.
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The degree of sensitivity of interpretation is limited to the design cycle time, e.g., 5, 15, 30 minute or 1/2/3 or 4 hour. The goals of the survey need to be clearly defined prior to survey design with an understanding of the underlying issues. A long term cycle time of say hourly will not assist with managing a short term demand adjacent to a shop that serves a role as a newspaper seller or milk bar.
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The conventional output of such a survey is to depict, subject to cycle frequency sensitivity, the demand of duration of stay of vehicles. This may assist in determining a demand for say a long term car park or misuse of a short stay park station by all day public transport commuters. Or you may reassign a part of a one hour restricted zone to say 15 minute bays to allow and free up an area near the front of the shop for users who have a shorter but higher turnover.
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