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1-1 Part B, Appendix 1. Long List of Emerging Highway PMR Practices Functional Purpose Emerging PMR Practice Description and Examples Emerging PMR Practice Type Sustainability â Energy, Environmental Safety and Natural Resource Conservation Energy regenerative or renewable material sources, such as plant or micro-organism-based biogeotechnical materials, e.g. algae, vegetable oil, pyrolysis-based or lignin-based bio asphalt or resins Materials Renewable energy-based or energy responsive material production, such as low energy asphalt mix production and cleaner cement production (e.g. Solar Thermal Electrochemical Production process) Materials Environmentally responsive materials, such as low Green House Gas emitting cement, carbon capture in cement concrete, and âself- cleansingâ photocatalytic concrete or carbon nanotubes in concrete, and low energy asphalt to improve air quality Materials Applications of green chemistry in roadway material production and construction, to reduce adverse risks to human health and the environment, such as geopolymers in concrete, magnesium oxide cement, non-corrosive anti-icing products Materials Increased use of recycling, such as higher percent of virgin materials substitution with recycled materials, advanced in place material rejuvenation systems and permeable, elastic pavement blocks utilizing waste polyurethane Materials New tools to evaluate the sustainability of transportation projects, such as environmental product declarations to account for life-cycle environmental impact of a product, sustainability evaluation and rating methods for underground construction, such as Invest and Envision Tools ISO:14025-based Environmental Product Declarations for sustainability evaluation Tools Natural resource recharging structures, such as permeable yet structurally adequate pavements and roadside managed aquifer recharging, to reduce precipitation runoff Approaches Urban roadway surfaces with high solar reflectance, such as light colored asphalt pavement surfaces, to reduce urban heat island effect Approaches Advanced roadway and roadside noise mitigation systems, such as sound absorptive high-strength concrete, solar power generating noise attenuators, weather resistant, visually appealing, vinyl-based transparent noise barrier screens and noise reducing natural landscaping Approaches Urban "green" highways with landscaped deck ceilings Approaches Sustainable roadside landscapes with greater emphasis on native habitat that supports natural heritage, biodiversity, native vegetation, low maintenance, xeriscaping, onsite composting, and natural fertilizers Approaches Road-based energy-harvesting technologies, such as piezoelectric generators, dynamic speed bumps and solar energy convertors Technologies Renewable energy-based or energy responsive construction equipment, such as green paving trains using non-carbon, renewable fuels and battery-operated electrical vehicles Technologies Applications of geothermal energy, such as for de-icing bridge decks Technologies
1-2 Functional Purpose Emerging PMR Practice Description and Examples Emerging PMR Practice Type Traffic Operations, Safety and System Reliability Design, safety and maintenance standards for ancillary assets in automated vehicle pathways (e.g., specialty signs and markings) Tools Artificial intelligence applications in traffic operations (e,g., signalization, travel demand management & behavior analysis) and emergency response (e.g. intelligent emergency evacuation guidance) Tools Dedicated corridors for automated vehicles that require specialized maintenance, such as dedicated lanes for automated trucks, bus rapid transit, and automobile platoons Approaches Multi-decked highways for traffic (including dedicated lanes for specific vehicle types) Approaches Smart roadway surfaces (with embedded dynamic traffic channelization and controls) Approaches Advanced Transportation Systems Management and Operations (TSMO) device and communications systems maintenance Approaches Probe-based (vehicle and/or sensor-based probes) connected vehicle applications to supply real-time asset inventory, health, condition, and performance data collection and reporting, such as real-time, probe-based smoothness and friction measurement Technologies Connected vehicle-to-infrastructure (V2I) technology providing communications between passing vehicles and road side units Technologies Automated enforcement technologies for work zones Technologies Highway systems/managed motorways fitted with nontraditional, high value, ancillary structural assets, such as guardrails with alert sensors, and self-actuating impact attenuators and crash cushions Technologies Asset Longevity and Life-cycle Management High performance materials for roadway structures with high- strength and enhanced durability, including many variations of high performance steel, concrete, asphalt, aluminum and plastics Materials Superior quality roadway surfaces, such as the use of abrasion resistant roadway materials, high friction mastics, surface protection laminates and texturing methods, e.g. prefabricated thin rollable pavement surface with epoxy resin and chippings on textile-reinforced concrete, and Rollable Road Materials Materials with crack healing properties, such as self-healing asphalt and self-healing bio concrete, for improved for improved mechanical properties and durability Materials Nanotechnology-based construction materials for improved mechanical properties and durability Materials Microbial geotechnology applications such as bioclogging and biocementation to improve mechanical and hydraulic properties of soils Materials Composites for reinforcement of roadway structures to improve mechanical properties, and durability, such as carbon and glass fiber reinforced polymers Materials Cost-effective solutions, such as lightweight fill for embankments (e.g. Geofoam, low-density cementitious fill, and expanded shale) Materials Machine learning applications in developing more reliable, robust and data-driven decision support systems Tools Application of mechanistic perpetual/long-life concepts for roadway infrastructure in materials, design, construction practices, and management Approaches
1-3 Functional Purpose Emerging PMR Practice Description and Examples Emerging PMR Practice Type Asset Longevity and Life-cycle Management (continued) Predictive-proactive maintenance regime for roadway assets e.g. reliability centered maintenance Approaches Applications of "Preservation First" approach integrated into asset life-cycle management Approaches Pre-stressed concrete slab technology for increased durability and better crack control Technologies Procurement and Methods Enterprise information systems for business process integration Tools Customer Experience Management (CXM) Analytics in Decision Making Tools Decision support systems for roadway maintenance, such as summer and winter maintenance Tools Game and simulation based workforce training solutions Tools Performance and qualifications-based procurement for all phases of roadway project, including design, construction, maintenance and operations Approaches Outsourcing and privatization of PMR Approaches Newer revenue and financing models, such as crowdsourced funding Approaches Human resource emerging PMR practices at workplace, such as intellectual property-based incentives, work force performance management Approaches Newer warranty schemes, such as P3 project warranties, to ensure quality Approaches Increased use of prefabrication, modular assembly and offsite construction for improved construction productivity, quality and work zone management Technologies Robotics in prefabrication, modular assembly, construction, maintenance and repair, for improved construction productivity, quality and work zone management Technologies 3D "printing" of infrastructure components for faster construction maintenance and repair Technologies Advanced construction methods, such as large diameter tunneling and magnetic levitation technology for bridge/elevated deck heavy lift structural placement, to improve construction productivity, quality and work zone management Technologies Intelligent construction systems, machines and technologies for improved construction productivity and quality with real-time monitoring of material placement and compaction using electromagnetic technologies (e.g. infrared) Technologies New subsurface maintenance and repair technologies using polymer-based superabsorbent water blocking agents, regenerative polymers and flexible robots made with silicone rubber and microfluidic channels for crack sealing/grouting that can wiggle itself through cracks Technologies Non-Destructive Testing for Ancillary Assets e.g. linear polarization resistance devices pulse repetition frequency, guided wave ultrasonic testing, asset condition imaging using electromagnetic technologies Technologies
