{"id":4899,"date":"2025-07-08T13:20:55","date_gmt":"2025-07-08T13:20:55","guid":{"rendered":"https:\/\/tyt.webpagefxstage.com\/?p=4899"},"modified":"2025-07-08T13:20:58","modified_gmt":"2025-07-08T13:20:58","slug":"apu-weight-exemption-guide-by-state","status":"publish","type":"post","link":"https:\/\/www.trackyourtruck.com\/blog\/apu-weight-exemption-guide-by-state\/","title":{"rendered":"APU Weight Exemption Guide by State"},"content":{"rendered":"<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>Auxiliary power units (APUs) can help limit fuel use by eliminating the need to run the engine idle while parked, yet allowing the driver to enjoy the vehicle\u2019s comfort systems during rest stops. However, APUs can cause a problem for truckers who regularly drive near the maximum weight limits, as these units weigh several hundred pounds.<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>Starting in 2005, the government \u2014 on both the federal and state levels \u2014 tried to create laws that helped overcome this hurdle. To this day, there can be some confusion as the regulations are different between states. This guide helps to clarify that confusion and gives you the information you need to know about APU weight guidance to remain compliant, depending on which states you travel through.<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/heading -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<h2 class=\"wp-block-heading\">What Is an APU?<\/h2>\n<\/div><\/div><\/div>\n<!-- End Block: core\/heading -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>An auxiliary power unit (APU) is a compact but heavy engine installed in trucks to help provide power for various functions when the main engine is off. There are several reasons to use an APU, but primarily, it is beneficial when truckers stop for rest periods. The driver can continue to enjoy the comforts of the cabin without needing to idle the truck&#8217;s engine.&nbsp;<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>An APU allows the driver to use the truck&#8217;s amenities, such as electrical devices, the heating and cooling system and essential appliances, while reducing wear on the main engine. It also limits the amount of emissions and fuel consumption.<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/heading -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<h3 class=\"wp-block-heading\">Types of APUs<\/h3>\n<\/div><\/div><\/div>\n<!-- End Block: core\/heading -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>There are two main types of APUs available, and these are:<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/list -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<ul class=\"wp-block-list\"><!-- Start Block: core\/list-item -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<li><strong>Diesel-powered APUs: <\/strong>The most common type of truck APU, and you can use them to run various appliances. Their only drawback is that they require regular maintenance to keep them in running order.<\/li>\n<\/div><\/div><\/div>\n<!-- End Block: core\/list-item -->\n\n<!-- Start Block: core\/list-item -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<li><strong>Battery-powered or electric APUs:<\/strong> These are quieter and often considered more environmentally friendly. However, they have a limited power capacity and can have a long recharge time.\u00a0<\/li>\n<\/div><\/div><\/div>\n<!-- End Block: core\/list-item --><\/ul>\n<\/div><\/div><\/div>\n<!-- End Block: core\/list -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>Both variations of the APU help truckers save on fuel expenses and <a href=\"https:\/\/afdc.energy.gov\/fuels\/laws\/IR?state=US\">comply with anti-idling regulations<\/a> prevalent in many states.<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/heading -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<h2 class=\"wp-block-heading\">What is APU Weight Exemption?<\/h2>\n<\/div><\/div><\/div>\n<!-- End Block: core\/heading -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>An APU weight exemption allows trucks with an Auxiliary Power Unit (APU) to exceed the standard weight limits by a specified amount. This exemption is designed to offset the additional weight that the APU adds to the truck, which can be several hundred pounds.&nbsp;<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>A 400-pound exemption was initially introduced by the federal government under the <a href=\"http:\/\/www.gpo.gov\/fdsys\/pkg\/PLAW-109publ58\/pdf\/PLAW-109publ58.pdf\">Energy Policy Act of 2005<\/a>, initiated under President George W. Bush.&nbsp;<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>Later, under the Obama administration, in 2012, this amount was increased to 550 pounds under <a href=\"https:\/\/www.transportation.gov\/map21\">the highway bill MAP-21<\/a>, otherwise known as the Moving Ahead for Progress in the 21st Century Act.&nbsp;<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>The exemption helps truckers comply with anti-idling regulations without sacrificing the total cargo capacity. A slight complication is that implementation can vary by state. Truckers traveling over state lines must be aware of different exemptions to avoid penalties.<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/heading -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<h2 class=\"wp-block-heading\">How Does an APU Weight Exemption Work?<\/h2>\n<\/div><\/div><\/div>\n<!-- End Block: core\/heading -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>An APU weight exemption permits trucks with APUs to exceed standard weight limits <a href=\"https:\/\/afdc.energy.gov\/laws\/11599\">by up to 550 pounds<\/a>, typically called an idle reduction weight exemption. This allowance helps compensate for the APU&#8217;s weight, enabling the truckers to adhere to anti-idling laws without sacrificing cargo space or weight.&nbsp;<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>To benefit from this exemption, truck operators must carry proof of the APU&#8217;s weight, typically provided on a written certificate from the manufacturer. Ensuring this documentation is readily available during vehicle inspections is essential. Additionally, the driver must prove by demonstration or certification that the APU is operational.&nbsp;<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>Again, the application of this exception does differ across states. Some states will automatically recognize the federal exemption, while others have unique regulations or require additional paperwork. Truckers should, therefore, be familiar with the specific rules for each state that they need to travel through to ensure compliance and avoid any potential penalties.<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/heading -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<h2 class=\"wp-block-heading\">Why Are There APU Exemptions?<\/h2>\n<\/div><\/div><\/div>\n<!-- End Block: core\/heading -->\n\n<!-- Start Block: core\/image -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"585\" src=\"https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2016\/05\/02-Key-reasons-why-APU-exceptionsRev01-1024x585.png\" alt=\"Why Are There APU Exemptions?\" class=\"wp-image-8480\" srcset=\"https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2016\/05\/02-Key-reasons-why-APU-exceptionsRev01-1024x585.png 1024w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2016\/05\/02-Key-reasons-why-APU-exceptionsRev01-600x343.png 600w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2016\/05\/02-Key-reasons-why-APU-exceptionsRev01-300x171.png 300w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2016\/05\/02-Key-reasons-why-APU-exceptionsRev01-768x439.png 768w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2016\/05\/02-Key-reasons-why-APU-exceptionsRev01-1050x600.png 1050w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2016\/05\/02-Key-reasons-why-APU-exceptionsRev01.png 1120w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div><\/div><\/div>\n<!-- End Block: core\/image -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>APU weight exemptions are crucial for truckers who use auxiliary power units to comply with anti-idling regulations. The following are the key reasons why APU exceptions are in place:<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/list -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<ul class=\"wp-block-list\"><!-- Start Block: core\/list-item -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<li><strong>Fuel saving:<\/strong> Using an APU means truckers can still power essential systems without running the main engine, drastically reducing the vehicle&#8217;s fuel consumption.<\/li>\n<\/div><\/div><\/div>\n<!-- End Block: core\/list-item -->\n\n<!-- Start Block: core\/list-item -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<li><strong>Emission reduction:<\/strong> Using APUs instead of idling the engine means trucks emit fewer pollutants. This contributes to cleaner air and allows truckers to comply with environmental regulations.\u00a0<\/li>\n<\/div><\/div><\/div>\n<!-- End Block: core\/list-item -->\n\n<!-- Start Block: core\/list-item -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<li><strong>Engine wear and tear:<\/strong> APUs reduce the need for prolonged idling, which can lead to excessive wear and tear on the main engine. Ultimately, using an APU leads to a longer engine life and lower maintenance costs.<\/li>\n<\/div><\/div><\/div>\n<!-- End Block: core\/list-item -->\n\n<!-- Start Block: core\/list-item -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<li><strong>Driver comfort: <\/strong>APUs power the heating, cooling, other systems and amenities when drivers are on breaks. Without them, the driver would need to idle the engine.<\/li>\n<\/div><\/div><\/div>\n<!-- End Block: core\/list-item -->\n\n<!-- Start Block: core\/list-item -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<li><strong>Regulatory compliance:<\/strong> APUs help truckers comply with strict idling laws in many states while ensuring the vehicle operates efficiently.<\/li>\n<\/div><\/div><\/div>\n<!-- End Block: core\/list-item --><\/ul>\n<\/div><\/div><\/div>\n<!-- End Block: core\/list -->\n\n<!-- Start Block: core\/heading -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<h2 class=\"wp-block-heading\">APU Weight Exemptions by State<\/h2>\n<\/div><\/div><\/div>\n<!-- End Block: core\/heading -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>Some states now have laws on the books that outline their exemptions. Others don\u2019t have statutes but enforcement policies that allow for the extra weight \u2014 so drivers would not be cited. A few states still do not have an exemption for APUs on the books.<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>How does this legislation affect you? The accompanying table provides state-by-state information about the current regulations per the U.S. Department of Energy. Remember that state laws can alter, so drivers and fleet professionals should always check state weight allowances before traveling at max capacity.<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>The following chart, with information <a href=\"https:\/\/afdc.energy.gov\/laws\/state\">sourced from the U.S. Department of Energy<\/a>, as well as <a href=\"https:\/\/ops.fhwa.dot.gov\/freight\/policy\/rpt_congress\/truck_sw_laws\/app_a.htm\">the Federal Highway Administration<\/a>, provides APU exemption by state:&nbsp;<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<div class=\"wp-block-image\"><!-- Start Block: core\/image -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" width=\"519\" height=\"1024\" src=\"https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2021\/11\/tyt-chart-1-519x1024.jpeg\" alt=\"\" class=\"wp-image-4909\" style=\"width:519px;height:1024px\" srcset=\"https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2021\/11\/tyt-chart-1-519x1024.jpeg 519w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2021\/11\/tyt-chart-1-scaled-600x1183.jpeg 600w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2021\/11\/tyt-chart-1-152x300.jpeg 152w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2021\/11\/tyt-chart-1-768x1515.jpeg 768w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2021\/11\/tyt-chart-1-779x1536.jpeg 779w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2021\/11\/tyt-chart-1-1038x2048.jpeg 1038w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2021\/11\/tyt-chart-1-304x600.jpeg 304w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2021\/11\/tyt-chart-1-scaled.jpeg 1298w\" sizes=\"(max-width: 519px) 100vw, 519px\" \/><\/figure>\n<\/div><\/div><\/div>\n<!-- End Block: core\/image --><\/div>\n\n<!-- Start Block: core\/heading -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<h2 class=\"wp-block-heading\">Get Quality Fleet Tracking With Track Your Truck<\/h2>\n<\/div><\/div><\/div>\n<!-- End Block: core\/heading -->\n\n<!-- Start Block: core\/image -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"530\" src=\"https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2016\/05\/03-Get-Quality-Fleet-Trackingrev01-1024x530.jpg\" alt=\"Get Quality Fleet Tracking With Track Your Truck\" class=\"wp-image-8477\" srcset=\"https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2016\/05\/03-Get-Quality-Fleet-Trackingrev01-1024x530.jpg 1024w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2016\/05\/03-Get-Quality-Fleet-Trackingrev01-600x311.jpg 600w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2016\/05\/03-Get-Quality-Fleet-Trackingrev01-300x155.jpg 300w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2016\/05\/03-Get-Quality-Fleet-Trackingrev01-768x398.jpg 768w, https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2016\/05\/03-Get-Quality-Fleet-Trackingrev01.jpg 1120w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div><\/div><\/div>\n<!-- End Block: core\/image -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>When you need the most reliable and effective commercial vehicle tracking for companies big and small, Track Your Truck is your solution. We offer a range of products, including our <a href=\"https:\/\/www.trackyourtruck.com\/fleet-tracking-systems\/truck-tracking\/\">GPS Truck Tracking System<\/a> \u2014 you can include passive, live and satellite GPS tracking depending on your precise business needs.&nbsp;<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p>Be sure to work with the best in the business and <a href=\"https:\/\/www.trackyourtruck.com\/how-it-works\/request-quote\/\">request a quote<\/a> today, or call <a href=\"tel:88884343848\">888-434-3848<\/a> to discuss our solutions and tracking devices.&nbsp;<\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/paragraph -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<p><strong>Feel free to share this on your website:<\/strong><\/p>\n<\/div><\/div><\/div>\n<!-- End Block: core\/paragraph -->\n\n<!-- Start Block: core\/html -->\n<div class=\"container\"><div class=\"row\"><div class=\"col-xxs-12\">\n<textarea style=\"width: 100%; height: 100%; resize:none;\" cols=\"60\" readonly=\"readonly\" rows=\"3\"><img decoding=\"async\" src=\"https:\/\/www.trackyourtruck.com\/wp-content\/uploads\/2021\/11\/tyt-chart-1-1038x2048.jpeg\" alt=\"Tyt Chart 1 1038x2048\" style=\"width:500px;height:1000px;\"><p><a href=\"https:\/\/www.trackyourtruck.com\/blog\/apu-weight-exemption-guide-by-state\/\">APU Exemption Guide<\/a> by <a href=\"https:\/\/www.trackyourtruck.com\/\">Track Your Truck<\/a><\/p><\/textarea>\n<\/div><\/div><\/div>\n<!-- End Block: core\/html -->","protected":false},"excerpt":{"rendered":"<p>Auxiliary power units (APUs) can help limit fuel use by eliminating the need to run the engine idle while parked, yet allowing the driver to enjoy the vehicle\u2019s comfort systems during rest stops. However, APUs can cause a problem for truckers who regularly drive near the maximum weight limits, as these units weigh several hundred [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":8482,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[12],"tags":[],"class_list":["post-4899","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fleet-management"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>APU Weight Exemption Guide by State | Track Your Truck<\/title>\n<meta name=\"description\" content=\"Learn how the exemptions work, who decides on them, the reason they are in place and the APU exemption by state. Speak to Track Your Truck today!\" \/>\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.trackyourtruck.com\/blog\/apu-weight-exemption-guide-by-state\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"APU Weight Exemption Guide by State | Track Your Truck\" \/>\n<meta property=\"og:description\" content=\"Learn how the exemptions work, who decides on them, the reason they are in place and the APU exemption by state. 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