Road Maintenance Visual Guide: Introduction

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2 Road Maintenance Visual Guide: Introduction The One Network Road Classification (ONRC) was born from the opportunity for a better and more transparent way to plan and invest in maintaining and operating New Zealand s road networks. The ONRC classifies networks across New Zealand in terms of usage, and groups Customer Outcomes as Access, Amenity, Resilience, Safety or Travel Time Reliability. This guide provides assistance with five of the performance measures; four safety measures, and one amenity measure. Each of these measures requires a sample of the network to be inspected and the level of compliance recorded. The data should be entered into the ONRC Performance Reporting Tool. This will enable consideration of the performance levels with other performance measures or outcome measures, as well as similar road networks. It is intended to provide guidance and direction for: a. Anyone involved in managing a state highway and/or local authority roading network. b. Anyone involved in developing road maintenance contract documents and/or operational performance measures for a local authority. The guide is not intended to cover every asset, condition or situation that may arise on the network. It is intended to be used as a guide to ensure a consistent interpretation of what is deemed acceptable, marginal and unacceptable with regards to the performance measures requiring auditing in the field. Marginal items could require further site-specific analysis. Access Amenity Resilience Safety Travel Time Reliability This is a living document that will be updated periodically. If you have any feedback regarding this guide, or you have photos that will help improve this guide, please feel free to contact roadefficiencygroup@nzta.govt.nz ONRC Visual Guide Page 2

3 Technical Output Performance Measure 3: Sight Distances Sight distance (including hazard warning devices) are not obscured by vegetation or by unauthorised (advertising signage, etc) Measured by an inspection of 10% of the network annually; the target is 100% compliance. Sight distance well maintained through vegetation control Sight distance to sign slightly obscured by, however sign still visible and legible Slight distance to sign slightly obscured by, however sign mainly visible and legible Sight distance around curve and to edge marker post obscured by Sight distance well maintained through verge mowing Reasonably long verge grass although sight distance not affected. Long vegetation growing on sight Long vegetation growing on sight bench affecting forward sight distance around curve Sight distance maintained through vegetation growth on sight bench Reasonably long verge grass although sight distance not affected Sight distance to edge marker post slightly obscured by overgrown vegetation ONRC Visual Guide Page 3

4 Technical Output Performance Measure 7: Surface Faults (page 1 of 2) Number of maintenance related faults (such as rutting / depressions, shoving, potholes, corrugated length, edge break (in lane), and ponding water) that are likely to affect driver, e.g. requiring a reduction in speed or evasion Measured by an inspection of 10% (arterial and higher) or 5% (collector and access roads) of the network quarterly with the number of deficient locations recorded per 10km. Small potholes on a straight, will not affect driver Isolated small pothole, unlikely to affect driver Medium size pothole, approx. 150mm in diameter. May affect driver Large potholes near wheel path, will affect driver Large pothole in wheel path near curve exit. Will result in driver taking evasive action Small pavement deformation on a straight, will not affect driver Isolated pavement deformation on a straight, unlikely to affect driver Medium size pothole, approx. 30mm in height. May affect driver depending on location Large pavement deformation in high speed environment, will affect driver Large pavement deformation at approach to intersection, will affect driver Slight edge break into sealed shoulder, will not affect driver Significant edge break, confined to sealed shoulder. Unlikely to affect driver Edge break encroaching into the edge line. May affect driver Edge break encroaching into the trafficked lane. Highly likely to affect driver Edge break encroaching into the trafficked lane. Will affect driver ONRC Visual Guide Page 4

5 Technical Output Performance Measure 7: Surface Faults (page 2 of 2) Number of maintenance related faults (such as rutting / depressions, shoving, potholes, corrugated length, edge break (in lane), and ponding water) that are likely to affect driver, e.g. requiring a reduction in speed or evasion Measured by an inspection of 10% (arterial and higher) or 5% (collector and access roads) of the network quarterly with the number of deficient locations recorded per 10km. Small potholes in low speed environment. Highly unlikely to affect driver Potholes in low speed environment. Unlikely to affect driver Potholes in mid-speed environment. May affect driver Potholes in reasonably high speed environment. Likely to affect driver Large potholes in high speed environment. Will affect driver Minor ponding water in urban (low speed) environment. Will not affect driver Water running across road. Unlikely to affect driver Small area of ponding water. May affect driver depending on location Water ponding in wheel path in high speed area. Likely to affect driver Water ponding in lane at approach to intersection. Will affect driver/cyclist Small corrugations in low speed environment. Highly unlikely to affect driver Corrugations in low speed environment Unlikely to affect driver Corrugations in mid-speed environment. May affect driver Corrugations in reasonably high speed environment. Likely to affect driver Corrugations in high speed environment. Will affect driver ONRC Visual Guide Page 5

6 Good Practice (not a formal performance measure): Guardrails and Barriers All traffic restraining devices such as bridge side rails, guardrails, wire rope barriers and crash cushions are maintained in an effective. Measured by an inspection of 10% (arterial and higher) or 5% (collector and access roads) of the network quarterly, the target is 100% compliance. Guardrail in effective operating condition Guardrail superficially damaged but still in effective Guardrail damaged, needs inspection to determine if in effective operating condition Guardrail damaged, not in effective Guardrail significantly damaged, not in effective Slight damage to bridge rail, still in effective Damage to bridge rail, still in effective Guardrail not attached to block out post, although may still be in effective Guardrail missing block out. Unlikely to be in effective Guardrail damaged, not in effective Bridge rail in effective operating condition Damage to bridge rail, still in effective Note this is indicative and to be used as a guide only. Guardrail damaged, needs inspection to determine if in effective operating condition Guardrail damaged, not in effective Bridge rail damaged, not in effective Guardrails, wire rope barriers and crash cushions should be installed and maintained as per the manufacturers standards ONRC Visual Guide Page 6

7 Technical Output Performance Measure 10: Roadside Obstructions Roadside safety zones are maintained free from unauthorised and the development of new hazards Measured by an inspection of 10% (arterial and higher) or 5% (collector and access roads) of the network quarterly, the target is 100% compliance. Small, unauthorised signs at intersection. May be an obstruction Sapling allowed to grow, will become an obstruction in the future Car abandoned beside road Excess aggregate left in roadside verge. May be an obstruction Car abandoned beside road Sapling allowed to grow, will become an obstruction in the future Saplings allowed to grow, may become in the future Large unauthorised sign beside road Installation of new power pole close to road ONRC Visual Guide Page 7

8 Amenity (How road users the aesthetic aspects of the Journey) Technical Output Performance Measure 2: Aesthetic Faults No more than X defects per 5 kilometre sample length of aesthetic maintenance related faults (such as litter, damaged or non-functioning equipment or furniture, graffiti, vegetation, etc.) that are likely to detract from the customer s Measured by an inspection of the network and reported on number of defects assessed by sample length. This covers activities such as graffiti, vegetation control, rest area facilities etc. The compliance target differs by road classification. Rest area furniture in good condition. Nothing that will detract from the customer's Random sticker on traffic sign. Unlikely to detract from the customer's Rest area table in good condition, however grass marginal. May detract Graffiti on bridge end. Likely to detract Graffiti on traffic sign. Likely to detract Rest area furniture in good condition, vegetation well maintained. Nothing that will detract from the customer's Litter within road reserve, however is not visible to motorists. Will not detract from the customer's Rest area table in marginal condition, minor visible litter. May detract from the customer's Damaged rest area table. Likely to detract Graffiti on traffic sign. Likely to detract No litter, graffiti, overgrown vegetation. Nothing that will detract Well maintained roadside landscaped area. Nothing that will detract from the customer's Minor items of litter visible to motorist. May detract from the customer's Multiple items of visible litter. Likely to detract from the customer's Multiple large items of visible litter. Will detract from the customer's ONRC Visual Guide Page 8