Why Fleet Modernization Shouldn’t Depend on Replacement

APTA estimates that about 61% of demand response vehicles have exceeded their FTA minimum useful life, and the challenge extends beyond that mode. 32% of heavy rail cars, 29% of light rail vehicles, and 22% of buses are also beyond the benchmark that guides federally supported replacement. Those numbers point to an aging fleet and expose a limitation in how modernization is often discussed.

Agencies frequently treat modernization and vehicle replacement as the same initiative. New vehicles are expected to bring better technology and more efficient operations, but when the fleet replacement cycle can stretch from roughly 12 to 25 years, tying every capability upgrade to a new vehicle pushes riders and operations teams to wait years for improvements they need now. Replacement is still an essential piece of modernization, but it can’t be the only path to progress.

The Capital Plan Has Competing Priorities

Transit leaders are already making difficult choices across facilities, guideways, rolling stock, and technology. In 2024, public transportation capital expenditures totaled $29.6 billion. Only 28%, or $8.2 billion, went to rolling stock, while 6% supported facilities. At the same time, state capital assistance fell 21% from the prior year, and directly generated capital assistance declined 17%.

These figures don’t mean that agencies are neglecting their fleets. On the contrary, it reflects the reality that every part of the system is competing for finite capital. Transit agencies already rehabilitate many vehicles to extend their useful life, which keeps service moving while agencies work through procurement timelines and funding cycles. The same logic should apply to technology. Agencies can maintain a realistic replacement plan while pursuing a separate modernization track for vehicles already in service.

Old Vehicles Create New Operating Pressure

Fleet age is not only a capital planning issue. It affects the daily cost and reliability of service. Vehicle maintenance accounted for $9.7 billion in public transportation operating expenses in 2024, and salaries, wages, and employee benefits represented 58% of that. When an older vehicle requires more frequent attention, the effect reaches beyond the cost of a part. It consumes staff time, disrupts deployment plans, and can leave fewer vehicles available for service.

Demand response brings the challenge into sharp focus. It is the most widely operated transit mode, offered by 1,921 systems, and it has the highest operating cost per rider. It also has the largest share of vehicles beyond their useful life.

That combination increases the urgency to find improvements that do not depend on replacing every vehicle first. Better visibility into vehicle health can help maintenance teams act sooner. More effective scheduling and dispatch can help agencies use available vehicles efficiently. Clearer information can keep riders informed when service changes. None of these improvements makes an aging vehicle new. They can help agencies operate their existing fleet with greater control.

Separate the Vehicle From the Technology

A vehicle is a long-term capital asset. Software and connectivity do not need to move at the same pace. A software-first, modular approach allows agencies to upgrade specific capabilities without waiting for an entire fleet turnover. Depending on existing infrastructure, agencies can add CAD/AVL or expand real-time passenger information. They can improve scheduling and dispatch, then introduce maintenance intelligence, onboard integrations, or modern fare technology in phases.

This shifts modernization from a once-per-generation event to an ongoing operational discipline. Agencies can address the areas creating the most friction first, then build on that foundation as funding and priorities evolve. A modular strategy can also reduce the risk of replacing one large, tightly coupled system all at once.

Fare payment shows what this kind of progress can look like. The share of transit systems offering smart cards rose from 32% in 2015 to 56% in 2025. 35% now offer open payment technologies. Those rider- facing improvements did not require every agency to replace its fleet before providing a more modern experience.

The same principle can extend across operations. The goal is not to add technology for its own sake. It is to improve visibility, help teams coordinate service, and keep riders informed, even when vehicles are at different points in their lifecycle.

Build Two Modernization Tracks

For boards and agency leaders, the capital conversation should include two connected plans. The first is the vehicle replacement strategy: which assets need to be replaced, when funding may be available and how procurement will be phased. The second is the software modernization strategy: which capabilities can deliver value now and carry forward as new vehicles enter service.

That distinction leads to a useful question: Which improvements are being deferred because the agency is waiting for new vehicles, even though the real constraint is software or connectivity? Waiting for a complete fleet turnover is not a modernization strategy. Agencies need a path that respects the replacement plan without allowing it to set the pace for every other improvement.

To learn how to build a modular, connected system that strengthens operations and the rider experience across your existing fleet, speak with one of our experts.