Painted sleeve Material: steel. Shop Retractable Bollards The Protogetic Filter CLEAR ALL ( 1) Barrier Type Bollards Retractable Bollards Cable Barriers Crash Arms Street Furniture Net Barriers Security Planters Portable/Mobile Barriers Rising Beams Tire Spike Barriers Wedge Barriers Crash Barriers Removable Bollards Manufacturer Learn how to install the R-8400 series retractable bollards into new concrete using retractable receivers. This will allow a slight berm to be created with concrete. Anti-terrorist crash-tested telescopic security bollards are available, designed to provide exceptional strength and withstand the impact of vehicles travelling at set speeds. Bollards ship standard with 1 of 4 reflector stripe colors. This video demonstrates how simple and easy it is to retract and operate an ATG Access square, retractable bollard. LA-S14 Lift Assist Telescopic Bollard. The diversity in their functionality is notable; while certain models operate on hydraulic systems, others incorporate electronic controls. Retractable barriers, also known as Tensa Barriers, are available for hire across Sydney. 00. road blocker retractable bollard LBA RB10. GD# FAC-116509 MFR# 116509. Yellow CasettleWallAttachement. The post is axially. pneumatic stainless steel for pedestrian areas. Price. Min Order: 1 piece. Crowd Control Systems Are Australia's Leading Supplier Of Retractable Barriers, Wall Mounted Barriers, Sign Holders, Rope Barriers, Stanchions, Tensile Barriers, Twist Ropes, Barrier Posts and Printable barrier designs. Retractable bollards rise out of the ground to protect property and assets - no need to remove and store bollards. 1. Material: Matt Finished Powder Coated Steel. Our high quality heavy duty retractable barriers are perfect for crowd control, queue control at large events or simply to block off areas. Designed to stop up to 30,000 lbs. This bollard can be locked in extended, upright, or lowered, retracted positions using a single key-locking mechanism. €189. The barriers feature a heavy-duty weighted base that ensures the unit remains in place and is stable. The base is a very solid 8. Price is for our standard hire period which is up to 3 days hire. These units are designed to PAS68: 7500 [N3]/80/90:3. These are ideally suited for use at sporting. Our full range of sizes and heights can be powder coated to suit your individual application. Heald’s Raptor is a patent-protected retractable security bollard, crash tested to both PAS68 and ASTM standards. 8m long. 8 metres in length making it ideal for creating crowd barrier and crowd control barriers in busy places and they are easy to set upautomatic retractable bollard DK/L Series. Place the bollard assembly in designated location. 0. These bollards are the most complete line of architectural to medium-security retractable bollards on the market. Complies to AS/NZS 3845:1999The R-8472-RA Double Locking Retractable Bollard retracts fully below ground, closing flush to avoid obstruction and tripping hazards, and can be locked in both extended, upright and lowered, retracted positions. . Restrict and grant access to an area— these bollards act as a strong physical barrier and have a hinge to fold flat against the ground in either direction. TrafficGuard®, Inc. After all, security bollards are perfect for a wide range of applications. Retractable bollards Retractable bollards are most commonly associated with security checkpoints, and for good reason. If a bollard is repeatedly dropped instead of lowered by hand, the base can suffer damage. Bridal Arch. The features of Blockaides Automatic Hydraulic series bollards include: Dimensions: 60 x 25 x 90 inches. Finishing: the bollard is available in painted steel (with or without ribs) and in brush stainless steel. The drive unit is hydraulic, but in case of power failure hydraulic bollard can be lowered or lifted manually with the help of manual hand pumps. 5″ diameter surface footprint and rises 36″ above ground. With specific types of telescopic retractable bollards, there's no need to compromise on quality and safety. Let’s find your ideal car. Below, 1150mm. Perry's Sunshine Coast Event Hire are the largest event firm on the coast. 12” & 13” deep foundations allow for installation where underground utilities prevent a traditional deep-mount bollard. steel retractable automatic. 8" (1,000mm x 275mm) • IP 67 Protection Class • Able to withstand impact from truck @ 50 mph / 80 kph. Crash-Tested Shallow Barrier. Browse telescopic retractable. Brutus 1150mm Safety Bollard With 6kg Base. Get. From parking posts and security posts to Rhino bollards and barriers. 4. . $27. The EB series bollards are ASTM-M30 (K4), ASTM-M40 (K8), and ASTM-M50 (K12) impact. Finish: Retractable Bollards powder coated safety yellow. (6810 kg) gross weight car impacts a bollard from a erect direction. You can rely on us for professional help. Height: 500, 700 mm. Our retractable bollards are perfect, when you need to direct your customers, and do it in an attractive and unobtrusive way. Temporary barriers can be either improvised or designed specifically as portable barriers. S. (1) from £1,260. TISO Traffic automatic bollards RB343. Manual telescopic bollards are the simplest form of retractable bollards. Retractable bollards help control access and improve perimeter security. Types of Events Suitable to Hire Bollards & Picket Fencing. As I remember, these “ornate” bollards that are now missing took quite a while to arrive from China in the. page 1 of 18 department of defense us army corps of engineers protective design center 1616 capitol avenue, suite 9000 omaha, nebraska 68102-4901Series R-8400 Retractable Bollards Updated December 2015 Technical Service Manual SINCE 1925 Reliance Foundry Co Ltd. With the Titan bollard, you can be safe in the knowledge that you are buying a proven high-security solution. 2m Tall 1300359663 [email protected] Hires retractable belt stainless steel bollards are the perfect way to eloquently organize queuing lines, or to section off areas for events, crowd control or restrict public access to floor space. ANNT Perimeter Protection introduces Driveway Bollards, a cutting-edge range of stainless steel bollards, engineered and developed for residential protection. 8 standards. Excavate a hole that is 300mm square and the correct depth for your chosen Retractapost size. What are safety bollards? Similar to these traffic products are road safety bollards that can warn or corral cars and trucks away from dangerous roadway hazards like construction, drop. GD# FAC-js80ha-bundle . Manual Retractable Bollards are manufactured from Type 304 stainless steel or Type 316 for harsher environments, and the stainless steel is polished to a #4 finish for long-lasting durability. collapsible bollards are ideal for vehicle access control, particularly for emergency vehicle access roads, trails and maintenance and utility access roads. Being all-electric, it avoids the waste of hydraulics, doing away with waste pumps, fluid reservoirs, and hydraulic hoses. R-847x retractable bollards are the perfect solution for communicating the changing access requirements of any site. 2 days ago · How about retractable bollards? If PBOT really cared about efficiency for market vendors and safety of people on bikes they would implement tried and true systems with perhaps higher front-end investment but fewer future problems. From £174. Every Day new 3D Models from all over the World. Bollards can be used to help control access to multi-use spaces. 5" D x 72" H. 11 yrs CN Supplier . Price. The retractable bollards are columns of variable thickness installed in the ground, which through a control system are lowered and raised to allow passage or to limit the access of cars. Crowd Control. R-8471 Single Locking Retractable Bollard USD $ 760. Guardiar Access Control Bollards. Temporary barriers are ideal for sectioning off an area that is under maintenance or repair or for crowd control and. Requirement . 2 sets (Min. With a maximum resistance of 700 KJ, it is able to. ) clearing the way for access. Retractable seat belt style. With a maximum resistance of 700 KJ, it is able to. Anti Vehicle Fence Range. $5. Physically tested K 12 Crash version. With over 25 years of experience in the security industry, Supamaxx is Australia's premier source for theft prevention and perimeter security. Both permanent and removable bollards contribute to a commercial space or organization’s aesthetic quality. The ONE30EVO high-security bollard is designed to control access to sensitive sites and protect strategic access points from terrorist attacks. Decorative look. 6 Harper Road, #06-08, Leong Huat Building, Singapore 369674. Some receivers self-store below grade, while others. Deter access onto open groundworks or provide better crowd control for events. Whatever your budget, adding an extra layer of security to your home will help you feel safe and secure. 2. This. Anti-Crash Drop Arm Barriers. The compressor is surface mounted on a concrete plinth within a control cabinet or utility room. $329. Retractable steel bollards to control vehicle entry in Long Beach, CA Bollards. Eddie Jim. Retractable Bollards. Our full range of sizes and heights can be powder coated to suit your individual application. Patti’s Party Hire Sydney offer temporary fence and crowd control barriers to help you to safely manage both pedestrians and vehicles. From traffic control to limited access pathways, these bollard is the obvious choice for ease of use and economical, maintenance-free operation. They are used to prevent vehicles from entering restricted areas, such as parking lots and traffic intersections. 00 / hire. $27,876. We have a range of bollards suitable for installation in and around driveways, including our energy absorbing EAB20 bollards, non-deforming bollards, removable bollards, and retractable bollards. 00 Silver Retractable Belt Bollard Hire. So for your best wheel stops, speed humps or any types of bollards like, steel, removable, parking bollards and many more safety bollards Gold Coast wide, order. Our full line of parking bollards and traffic control barriers includes collapsible, fixed and removable bollards, storage racks and traffic rated ground sleeve options in a variety of. Air circulation around the cabinet is required. security bollard ALE A25-60-C50. It has been successfully tested to BSI PAS 68, successfully stopping a 3,500kg vehicle at 48kph (30mph), making the SP100 is ideal for most perimeter security requirements. Impact-tested, high-security solutions with BSI: PAS 68, ISO IWA 14-1 and ASTM F2656 ratings for protecting pedestrians and buildings. If you have any questions or would like more information on our products and services, don’t. 00 inc vat. Cardinal Integrated Systems: 1-800-666-5600 | Cardinal Carryor: 1-877-919-1664. As the major inland gateway between New South Wales and Victoria, Albury has grown to become a major regional city. Tested to BSI PAS 68 the Titan MK II easily stopped a 7,500kg vehicle travelling at 80kph (50mph). $22. The bollard assembly height is 36 in. m30 & m50 bollards (static & auto) static bollards – apt30sm. Our retractable bollard products include: Retractable Energy Absorbing Bollards rated up to 60 km/h for locations where there is a risk of errant vehicles travelling at speed. Using lifting equipment, the City of London Removable Bollard can be easily detached to allow occasional access, making it ideal as a complementary product to a line of static bollards. Security, Fences, & Barriers. Buy products online from our wide range. Bollard maintenance comprises a range of procedures aimed at guaranteeing their optimal performance. We design our automatic pneumatic bollards to meet strict standards. Safe and Easy to Deploy. What are safety bollards? Similar to these traffic products are road safety bollards that can warn or corral cars and trucks away from dangerous roadway hazards like construction, drop. 22 Read more; 114mm X 2000mm Base Plate Bollards $ 255. Ensure that the top edge of the receiver will sit at approximately 1/4″ above grade. Cost - low. Stainless steel. Engineered removable bollard available as an option. 99. The Avon SB970CR Scimitar Security Bollard provides a high level of security against unauthorised vehicle access without the need for an outwardly aggressive appearance. Silver Retractable Belt Bollard Hire. Category: Bollards & Rope Hire. Our experts provide professional bollard installation services for any application. 00: £654. Concrete, steel, polyurethane and timber bollards are just some of the range of materials you can expect to find at Bollards Direct. Introducing the Retractable Bollard – a cutting-edge solution that enhances security and convenience. A bollard fence is a great low cost fencing alternative for property owners in search of security and privacy. R-8472 Double Locking Retractable Bollard USD $ 760. Are Retractable Bollards Crash-Rated? The Department of State, Department of Defense, and ASTM certify many types of vehicle barriers, including Retractable Bollards. Our manual retractable bollards are a great visual deterrent that will limit access to garages, driveways, trailheads, or any other open property. It proves to be a high-security product with high-speed. The retractable energy distribution bollard BRI offers up to 12 single-phase 16A sockets or 2 three-phases 63A sockets and 4 water or compressed air outlets. 5" W x 72" H. £250. Finish options include: galvanized, black or a custom color. Traffic Safety Systems is your number one choice when it comes to choosing a trusted Australian owned and operated online safety supplier. These bollards are available as round or square and vary in duty from simple access control to heavy duty. Fixed in-ground, removable, retractable, manual, semi-automatic or fully automatic, we have it covered. The bollard is an automatic retractable bollard operated by an inbuilt hydraulic unit; J200 HA bollard is 600mm in height and comes in 200mm diameter; J200 HA bollards have a rising time of 5 seconds and 7 seconds lowering; Know More Data Sheet. au Home Retractable Bollards. Toll Free 1300 766 003. They feature a red retractable belt made of woven nylon and a weighted base that makes them very difficult to topple over, making this. If a series of bollards is to be installed, we suggest digging a trench over digging individual holes. State of the art fixed and retractable bollards come in various heights and operation modes. As a leading UK provider of permanent and temporary hostile vehicle mitigation bollards and barriers, we can deliver the right solution for your security needs. Expandable Barriers & Portable Barriers are a versatile, temporary portable solution to all your pedestrian and vehicular traffic control problems. 00 - $850. $55. 00 The R-8471 single-locking retractable bollard retracts fully below ground, closing flush to avoid obstruction and tripping hazards, and can only be locked in extended, upright position (see double-locking version). A recent installation of EDSUKB101 stainless steel automatic bollards at the Royal Shakespeare Theatre in Stratford upon Avon. ) clearing the way for access. If you are planning an event in Sydney or Melbourne, contact us today to discuss your carpet & bollards requirements. $27,876. This is something we find most people don’t think about when buying a driveway security bollard, but it’s one of the most important. The innovative self-contained bollard system incorporates an HPU or EPU2 within each individual bollard to create a self-contained, self-operating bollard barrier system. We supply a variety of bollards for any type of event, ranging from Chrome Bollards, to Gold Bollards, and seat belt retractable bollards as well, for. Shop our range of Safety Bollards & Cones at warehouse prices from quality brands. Cost - high. Automatic retractable bollards offer a myriad of practical applications, enhancing security and safety in parking lots, driveways, and public spaces. For over 20 years Leda has been manufacturing and installing high security retractable bollards to protect many of Australia’s high profile sites. The advantages of using retractable bollards include safety, security and convenience. Designed to stop up to 30,000 lbs. By. Max passing pressure: 80 tons trucks. Use alcohol-based products or quality de-icing solutions and follow with a lubricant to prevent icing issues in the future. Use: Regular to intensive passages Material: High-strength steel Display device: Class II reflective band (white) Illuminated ring: Leds (Red in Standard, White in Option) Dimensions (mm): Ø250 x H1000 (Above ground) Motorizations: Standard external hydraulic External hydraulic E. 00 Select options. Ameristar's line of fixed, retractable and removable security bollards are available in a variety of styles and crash ratings to fit your project's needs. These specific areas are at a greater risk of. Click & Collect your purchase in-store or we'll deliver it to you. $27. Order online for delivery or Click & Collect at your nearest Bunnings. Whether it is a pedestrian or crowd control barrier, temporary fencing, or a highly visible safety barrier, HSS has a large selection of quality barriers that ensure safety and awareness of your work area. Specifications. They can also enhance or add to the aesthetics of your installation location. Certified IWA 14-1:2013 & PAS68:2013 A single high-security ONE30EVO boll. (13636 kg). ESCO also provide a robust suite of physical security measures that help organizations to protect their infrastructure from hostile threats. Retractable Bollards. With a variety of heights available, all shallow/surface mount bollard/blocker have a equivalent rating of K4,K8 and K12. £526. For 2021, the most recent year data was available, the U. Add to Cart. The stanchions or crowd barriers are ideal for places such as banks, auditoriums and retail environments. We have a range of unique high security bollards including hydraulic, electro mechanical or manual operation. Retractapost 900 – 1400mm Deep Excavation. 4" Manual Lift Retractable Bollard STP4000-TH. From €75. A safety barrier is an obstacle, structure or fence that prevents movement or restricts access to a potentially dangerous or restricted. Border Lifting & Safety offers a comprehensive on-site inspection service covering all lifting and height safety equipment. Reliance Foundry’s Stal R-7471 single-locking retractable bollard is a versatile and convenient security solution for any modern building or landscape. Thanks to its unique design, the SP400 Manually Retractable Bollard is the ideal choice for securing remote sites where there is limited access to an electrical supply. 1920 "retractable bollard" 3D Models. Diameter: 273 mm. Our experts provide professional bollard installation services for any application. Contact one of our representatives online or call us at 909-217-3412 to learn more about our services today. 20 Related Items. This model is key-operated, gas-powered, and retractable by simply pushing on the head of the unit. Our bollards will keep unwanted traffic. Manual lift design pulls up with top handle. Partitions. This prevents cars driving between them, yet still allows pedestrians and wheelchair users to pass freely. 00 ex VAT. Retractable Bollard - 745mm above ground: H1755 x 90mm Dia: Galvanised: £425. With specific types of telescopic retractable bollards, there's no need to compromise on quality and safety. 86 $ 567. Fixed surface-mounted bollards. Bollard Overview. The LBA RB10 road blocker has a foundation depth of 850 mm, a height above ground of 605 mm and made of reinforced welded steel It's designed for intensive and continuous operation. Add to Cart. Easily raised and lowered in seconds to protect your driveway, garage, property, and buildings. 42 Add to cart; Sale! 114mm Removable In-ground Stainless Steel. Each stand have it unique 2m x 48mm BLACK Retractable belt. Bollards can be used to help control access to multi-use spaces. Hormann A 275-M30-1200 H automatic bollard. Surface mounting is an affordable way to keep your bollard cost low. A single key-locking mechanism ensures quick and easy access to restricted. Roadside retractable bollards will protect a number of locations. to the different bollard models. 1. Manual lift design pulls up with top handle. Certified Vehicle Barriers are “Crash-Rated,” meaning they have been tested in full field crash tests using a real vehicle. Introduction to retractable bollards Retractable bollards are access control devices that make a stylish but strong statement on streetscapes. Electromechanical bollards approved by the Ministry of Transport and Infrastructure, suitable for installation on public land where approval is required by law. After the impact, the bollard still ensures the security of the access point. From a job supplying BP Air Australia with 200 custom retractable bollards and sleeves to a single bollard for a residential driveway, there is no job too big or too small. Cost: £119. 00. With this innovation,Whether you're looking to clearly distinguish boundaries or provide high-quality security, the Bollards Direct range is the perfect solution. PRODUCT SHEET Automatic retractable bollards ONE30EVO High-security - Separate hydraulic unit Bollard cladding The ONE30EVO bollard is equipped with an innovative interchangeable sleeve system that allows you to customise the appearance of the access points and repair damaged heads in under 5 minutes. Retractable bollards subsequently prevent anyone who does not have the right information or product key from entering a commercial or industrial space. April 29, 2011. Polished and Brushed. above ground level. Industroquip Retractable Belt Barriers are a must have in any workshop, warehouse, carpark or facility in case of urgent need to deply a barrier to prevent injury and the public from hazards. com. Australian Bollards is the country’s leading bollard manufacturer operating under NJM Group. A single key-locking mechanism ensures quick and easy access to. 99. Retractable bollards allow you to raise and lower your bollards whenever you want. Our manually retractable security bollards have been crash-tested to the BSI: PAS 68, ISO: IWA 14-1 and ASTM F2656 standards, providing a proven high-security solution. Thousands of new, high-quality pictures added every day. ATG Access High-Security Manually Retractable Bollards provide you with impact-tested access control without the need to connect to a power source. Anti-Crash Drop Arm Barriers. Belt built in to pole. 2. 96 each. Order)Retractable bollards. Price quoted is per pole/barrier. This range is designed to arrest a 3,500 kg vehicle travelling at 48 kph:a resistance of 314 KJ+. 00. Australian bollards, renowned for being high-quality fixtures, often incorporate retractable models into their range. Add to quote Road Barricade. 2 sets (Min. It is a highly effective way to prevent unauthorized vehicle access and deter ram raids. 1. Marshalls' telescopic bollards provide a secure and cost-effective way to protect property and vehicles. The R-8471 single-locking retractable bollard retracts fully below ground, closing flush to avoid obstruction and tripping hazards, and can only be locked in extended, upright position (see double-locking version). 5m line. For Bollards & Barriers rentals, enquire now! 1) Guard rails. Security bollards are among the most frequently used forms of access control – and for good reason. Retractapost 745 – 1200mm Deep Excavation. Retractable bollards are susceptible to oxidation or rusting in high-salt (seaside) environments, as well as areas where street de-icing chemicals and compounds are frequently used. A range of telescopic bollards is available. Even more convenient are retractable bollards, sometimes called pop-up bollards, that can be automatically raised and lowered to accomodate events and traffic. Protect Employees and Pedestrians from Harm. Price quoted is per pole/barrier. 5cm Base Width: 32cm Material: Polished Stainless Steel Delivery: Your order can be. 9600 – Swing Crash Gates. Our Crowd Control Queue Barrier system includes Rope, Retractable, Barriers Stanchions & more. Additional 6KG bases can be ordered separately here. 50 ex VAT. We feature a wide selection of stainless steel. Automatic pneumatic bollards are controlled electronically and therefore operate automatically. Get your free quote on our high-quality, American-made crash-rated bollards! Blockaides, Inc. These Hydraulic and Retractable Bollards types are flexible in their ability to be operated by a variety of control systems. 5m Red Bollard Rope Hire. We have huge supplies of stock available\ delivered quickly at the venue of your choice countrywide. SKU: 765288. Flat top bollard is flush with ground when lowered. Our complete range of telescopic, retractable bollards to suit every budget. Height: 600 mm. Clean the Bollards Periodically. The clean, versatile design makes the R-9472 highly visible and aesthetic. Our high quality heavy duty retractable barriers are perfect for crowd control, queue control at large events or simply to block off areas. Following industry trends, the newest and now ascending innovation is the electric bollard design. Or use our online form. [email protected] 1-877-789-3245;R-8471 Single Locking Retractable Bollard USD $ 760. 0 /5 ·. Bollard Overview. 50. These security bollards are checked by doing a crash test. Phone (08) 9277 6761. Add to quote. Sale! 114mm Removable In-ground Bollard – Padlock Style $ 313. De-Ice As Needed. Best for theatres, banquet halls & other locations. 5" Safety Square. Automatic retractable bollards, also known as security barriers, are heavy-duty steel or concrete posts that rise and lower from the ground in a controlled manner. 96 ex VAT. Retractable Bollard (Stainless Steel) $ 825. Bollards are multipurpose posts that protect pedestrians, vehicles and property from damage. TISO Traffic automatic bollards RB343. 75kg making these. (2) $5 . 592. 1. The base is a very solid 8. GL900 Lift Assist Telescopic Bollard. 42 Add to cart; Sale! 114mm Removable In-ground Stainless Steel. Add to Cart. Add to. 4333 • Toll Free 888. PRODUCT SHEET Automatic retractable bollards ONE40EVO High-security - Separate hydraulic unit Bollard cladding The ONE30EVO bollard is equipped with an innovative interchangeable sleeve system that allows you to customise the appearance of the access points and repair damaged heads in under 5 minutes. When installing a fixed bollard, however, the spacing you choose will become a permanent barrier, so you’ll need to consider which kinds of traffic, if any, you want to allow into an area and what. Increase safety & appearance with Post Guard Bollard Covers. Available in shaft heights height 500 and 700 mm. Access Technologies carry a full range of Permanent, Removable and Retractable Bollards. View Product. Our retractable bollards are perfect, when you need to direct your customers, and do it in an attractive and unobtrusive way. 38. Surface mount fixed bollards are used. Retractable bollards are the ideal solution for a wide range of applications; restriction of parking spaces, reservation of site for deliveries, regulation of urban flows and building security. 5 tonne truck travelling at. Barriers and Fencing. 00 each and save 25%. The bollard is managed by an access control system and is actuated down by the user (remote control, contactless card, keypad, etc. Browse telescopic retractable. When raised, they act as a barrier to prevent unauthorized access, manage traffic flow, and protect vulnerable areas from potential threats. (2273 kg). com Phone 604. Previous 1. Retractable Badge Reels . Automatic bollards are a kind of traffic safety equipment for controlling the passage of road vehicles and can be used together with the parking barrier gate access control system or separately, which are also called electric bollards, electric rising bollards, hydraulic bollards, automatic rising bollards, automatic retractable bollards, rising. Traditional, high-security, shallow mount 3-bollard array. It’s essential to note that the cost of these bollards will also vary depending on the features included, such as lighting or a locking mechanism. Price is for our standard hire period which is up to 3 days hire. The Titan anti-ram retractable bollards, available in automatic, are excellent for. $27,876. The R-8471-RA single-locking retractable bollard retracts fully below ground, closing flush to avoid obstruction and tripping hazards, and can only be locked in extended, upright position (see double-locking version). Using compressed air as a power source which keeps this product environment-friendly. g. During fall, leaves and other debris can accumulate on concrete surfaces. Surface mount fixed bollards are used. Safe Rooms and Security Doors. Consult the GuardRite Retractable BLAST Impact Rating chart for complete weight and speed ratings. Why search around trying to find a reputable installer for your bollard, barrier or parking post, when our professional all inclusive installation service will take care of everything for you. Temporary barriers are often lightweight and easy to manoeuvre.