{"id":33727,"date":"2024-03-24T15:31:15","date_gmt":"2024-03-24T02:31:15","guid":{"rendered":"https:\/\/www.drivingtests.co.nz\/resources\/?p=33727"},"modified":"2025-01-07T14:02:31","modified_gmt":"2025-01-07T01:02:31","slug":"what-is-twin-steer-on-a-truck","status":"publish","type":"post","link":"https:\/\/www.drivingtests.co.nz\/resources\/what-is-twin-steer-on-a-truck\/","title":{"rendered":"What is twin-steer on a truck?"},"content":{"rendered":"\n

Four- and five-axle trucks have a twin-steer tandem axle set at the front. This enables the truck or tractor unit to carry more weight. Rather than only being able to legally support 6000kg, 7200kg or 7600kg, which is the rating for single standard, single large or single mega tyres, respectively, the maximum axle mass can be 11,000kg regardless of the types of tyres, as shown below.<\/p>\n\n\n\n

Each axle has single tyres and both axles are connected to the same mechanism so that they steer in the same direction. In the diagram below, S = Standard, SL = single large and SM = single mega. You can find out about what this means in our maximum axle mass course<\/a> as the implication for a truck operator is that the additional tare weight of the extra axle can be negated by any additional weight capacity, especially if the vehicle is already operating at or near the maximum limit.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Each steering axle has its own fluid reservoir that must be checked in the pre-trip inspection<\/a>.<\/p>\n\n\n\n

In terms of driver comfort, twin steer axles can reduce the see-saw effect that you can get on 3-axle trucks with a single steering axle. <\/p>\n\n\n\n

\"\"
8×4 logging truck and trailer with twin-steer<\/figcaption><\/figure>\n\n\n\n
\"\"
8×4 curtainsider with twin-steer showing how both front wheels turn<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Four- and five-axle trucks have a twin-steer tandem axle set at the front. This enables the truck or tractor unit to carry more weight. Rather than only being able to legally support 6000kg, 7200kg or 7600kg, which is the rating…<\/span><\/p>\n

Read more ›<\/a><\/div>\n

<\/p>\n","protected":false},"author":1,"featured_media":33729,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-33727","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-heavy-vehicle"],"acf":[],"yoast_head":"\nWhat is twin-steer on a truck? - DT Vehicle and Workplace Training Resources<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.drivingtests.co.nz\/resources\/what-is-twin-steer-on-a-truck\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is twin-steer on a truck? - DT Vehicle and Workplace Training Resources\" \/>\n<meta property=\"og:description\" content=\"Four- and five-axle trucks have a twin-steer tandem axle set at the front. 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