Sharp 32C231 User Manual

Portorož, SloveniaHEALTH ISSUES RAISED BY POORLY MAINTAINED ROAD NETWORKS••Johan GranlundJohan Granlund••Swedish Road Administration, C.S.Swedish Road

Portorož, SloveniaTest truck: Scania R480 164 G 6x4Gross Vehicle Weight 60 ton, incl trailer and 41 ton timber payload.609 000 km mileage, at 3 years

Portorož, SloveniaTruck ride sensorsZ-axis at front wheel axles.Z-axis 5 kHz at frame, L & R.GPS + 6-axis 100 Hz inertial unit in the cab.Videocam

Portorož, SloveniaReference MeasurementA laser/inertial Profilograph scanned the test road´s surface condition 20 000 times per meter.Photo: Mats Lan

Portorož, SloveniaResults: 1. Daily vibration exposure A(8)Results for normal driving shifts: A(8) = 0.76 m/s2.Exceeding the EU Action Value

Portorož, Slovenia2. Bumps gave high compression stressTransient vibration may cause high compression stress in the spine; a special health risk.The w

Portorož, Slovenia3. Rock n’ Roll at Hazardous SitesStraight road at HS Backe.In-truck data:The cab roll angle changed with 3,5°/s.Note the snake ratt

Portorož, SloveniaRock n’ Roll at HS ÅkeröTruck cab roll angle: - Very high rate; 5°/s.High lateral acc in cab: 2 m/s2.Very high lateral acc at driver

Portorož, SloveniaHigh RBCS variance at HS ÅkeröAlarm! 1.18 % RBCSV.Cross slope warps from -3 to -6 %.

Portorož, SloveniaProfilograph 3D laserscan at HS ÅkeröThe 1.18 % RBCS variance was caused by a 69 mm deep deformationNote: Exploded truck tire

Portorož, SloveniaTruck roll correlates with the RBCSV parameter

Portorož, SloveniaOutlineNorthern Periphery Roadex III project partners.Health and safety aspects on ride vibration.10 truck roundtrips of the 280 km

Portorož, SloveniaRecalling vehicle cornering forcesThe lateral force F is directly proportional to the road Curvature; 1000 / Radius. Key reaction fo

Portorož, SloveniaIdeal curves(-)(+)(-)Swedish Design Guidelines for 90 km/h.Values within green box = High standard. Orange box = Moderate to Low sta

Portorož, Slovenia-8-7-6-5-4-3-2-1012345678-4 -3 -2 -1 0 1 2 3 4Curvature = 1000 / Radius [m]Cross slope [%]Reference Cross Slope vs Curvaturen = 12 3

Portorož, SloveniaRd 331: Improperly banked curvesn = 12 300 sections from old Rd 331.

Portorož, Slovenia-8-7-6-5-4-3-2-1012345678-10-9-8-7-6-5-4-3-2-1 0 1 2 3 4 5 6Curvature = 1000 / Radius [m]Cross slope [%]Negative CS – roll over risk

Portorož, SloveniaConclusion on ride vibrationTruck ride vibration above the EU Action Value.Bumps gave high compression stress in the spine.Hauliers

Portorož, SloveniaConclusion on lateral buffetingHigh transient lateral forces at Hazardous Sites.Road sections with high truck roll/lateral vibration

Portorož, SloveniaFinal conclusion on road safety issuesRoadex III has demonstrated methods to identify Hazardous Sites (HS) with improperly banked cu

Portorož, SloveniaThank you for your attentionPhoto: Mats Landerberg

Portorož, SloveniaRoadex III partners -Creating affordable and reliable roads

Portorož, SloveniaDisproportionate health and safety risks153 % higher risk to die in a crash in rural NP areas, than in the metropols Stockholm &

Portorož, SloveniaHealth and safety aspects on ride vibrationTruck seat vibration often in the ISO 2631 Health Caution Zone.Bounce, Pitch and Roll mot

Portorož, SloveniaTests at the Beaver Road 331Annual Average Day Traffic, AADT, ranging from 350 to 2000 vehicles/day.Speed limits mainly 90 and 70 km

Portorož, SloveniaAccident locations: Clustered, not randomizedThe Roos Curve Haz. SiteThe Viksjö Haz. Sites

Portorož, SloveniaRoad user behaviour at Rd 331Avoiding pavement edge deformation.

Portorož, SloveniaTest partner: Brorssons Åkeri ABEach truck runs 18 hrs/day.Four runs of 2 * 140 km daily at the Beaver Road 331.Brorssons´s annual m