ADL celebrates rollout of 10K two-axle, double-deck bus
The 78-seat executive Enviro400 will join demonstration fleet as the company continues to promote high-specification double decks as an option for premium services.
Alexander Dennis Ltd. (ADL) celebrated a major milestone with the rollout of its 10,000th two-axle, low-floor double-deck bus. The landmark Enviro400 is emblematic of how ADL has influenced the progressive shift by the UK bus industry to high quality, low floor, easy access buses over the last two decades.
The 78-seat executive Enviro400 will join ADL’s demonstration fleet as the company continues to promote high specification double decks as an attractive option for premium services. It comes complete with leather seats, wood effect flooring, seat belts, Wi-Fi, USB charging points, mobile phone holders, and skylight roof panels, as well as next-stop audio and visual announcement systems.
Ad Loading...
The high specification options of the Enviro400, which have a proven track record of driving patronage growth on scheduled services, have broadened the type’s appeal beyond traditional bus work.
“This trend is a far cry from two decades ago when buses were fairly down-to-earth, no frills vehicles and it is fitting that we celebrate this 10,000 landmark with a double deck that demonstrates the huge strides we have made in taking product options to a whole new level,” said ADL’s Chief Executive Colin Robertson.
The milestone number of 10,000 two-axle, low-floor double-deck buses not only includes the current and previous Enviro400 models but also their trendsetting predecessor, which brought low-floor technology to the mainstream of UK bus operation.
The milestone number of 10,000 two-axle, low-floor double-deck buses not only includes the current and previous Enviro400 models but also their trendsetting predecessor, which brought low-floor technology to the mainstream of UK bus operation.
The Dennis Trident 2 chassis was launched in 1997 and, along with the Dart SLF (Super Low Floor) midi bus, sparked a revolution in the UK bus industry. Their focus on easy access not only made public transport available to wheelchair users and passengers with reduced mobility who had previously found high-step entrances prohibitive but vastly improved accessibility for parents travelling with children in pushchairs.
In 2005 ADL took double-deck technology to another new level, launching the Enviro400, an integrally designed complete vehicle providing a one-stop solution for operators. It was an immediate success and has subsequently been the UK’s best-selling bus for more than a decade.
Ad Loading...
“This 10,000th low floor double deck bus is a milestone for everyone at ADL,” said Robertson. “The extraordinary success of our Enviro400 is a reflection of the ingenuity, commitment and dedication of teams drawn from right across our business. No one ‘wins the league’ this consistently without having the right people and the right approach to delight customers.”
The region’s fixed-route system finished out the year with a total of 373.5 million rides. Adding 12.3 million rides over 2024 represents an increase that is equal to the annual transit ridership of Kansas City.
Rolling out in electric yellow and seafoam blue, the first battery-electric buses purchased from GILLIG will begin serving riders in south King County on February 2.
The agreement provides competitive wages and reflects strong labor-management collaboration, positive working relationships, and a shared commitment to building a world-class transit system for the community, said RTA CEO Lona Edwards Hankins.
The priorities are outlined in the 2026 Board and CEO Initiatives and Action Plan, which serves as a roadmap to guide the agency’s work throughout the year and ensure continued progress and accountability on voter-approved transportation investments and essential mobility services.
In this edition, we cover recent appointments and announcements at HDR, MCTS, and more, showcasing the individuals helping to shape the future of transportation.
While their comprehensive analysis of bus stops focused on Massachusetts, the researchers are excited about the generalizability of the findings and application to other locations.
CEO Nat Ford’s address offered a look at highlights from 2025, with a focus on the future and the innovative ways the JTA is shaping mobility in Northeast Florida.