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| Applied methodology | The basic method of defining credible speed deviation from the speed limit (ΔV = Vreal- Vlim), observation of four classes of vehicles and their grouping (PV, BUS, LDV, and HDV) |
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| Recording technique | Using a special measuring device (handheld radar) bushnell NSN 5840-01-620–6670 |
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| Site selection | Road class: Standard two-lane roads (class I highway)—two-lane class II roads (according to HCM-2016) [10] |
| Traffic lane width: from 2.75 m to 3.5 m |
| Distance from side disturbances: <2.50 m |
| Access density (on one side): <13 access points/km |
| Terrain: flat or hilly suburban road |
| Speed limit: 50–80 km/h |
| Free flow speed: speed limit + 10–20 km/h |
| Overtaking lane length (if any): location specific |
| Road condition: good condition |
| Longitudinal gradient: −5.70 ≤ G ≤ 7.00 |
| Length of measuring section from a cross section: min 1000 m |
| Traffic light intersection: none |
| There is no impact of pedestrian flows |
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| General information on traffic requirements | Traffic criteria: medium traffic load; higher percentage of commercial vehicles (15 and more); relevant flow according to the 200th hour criterion ≤12% AADT; percentage of traffic requests by directions: 60/40; lack of influence of parking or bus stops, recording in a peak and nonpeak period |
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| Data processing | Based on the average values of individual locations and the summary average values, the values of speeds that do not exceed the speed limit are ignored in the analysis. |
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