Optibus Battles Driver Turnover and Overtime Expenditure with New Intelligent Driver and Vehicle Allocation

The new engine performs complex, compliant assignments in minutes, helping avoid last-minute call-out pressures and the millions in penalties and overtime that come with manual, spreadsheet-based allocation.

Optibus, the leading end-to-end platform for public transportation planning, scheduling, and operations, today announced the launch of Allocation Optimization, a new capability within Optibus Operations that automates one of the most manual processes in public transportation operations: matching drivers and vehicles to work shifts. The engine builds compliant allocation plans in minutes rather than hours or days, paving the path to happier staff, fewer violations, better communication, and faster, easier workflows.

A long-standing challenge: tedious, manual allocation

Allocation is a complex matching problem. Yet every day, planners and dispatchers match drivers, vehicles, and blocks using spreadsheets, memory, and notes on driver availability, shift preferences, overtime, union rules, and more.

These manual processes come with a cost:

• Drivers face excessive overtime and rigid schedules that can negatively impact driver satisfaction
• Operators absorb standby coverage costs and compliance risks that hurt business
• Passengers get service that's more vulnerable to disruptions, leading to loss of trust and ridership

The challenges - and errors - scale with fleet size: large operations could be matching over a hundred open duties to a hundred or more spare drivers across multiple weeks.

Why Now? Driver shortages and call-outs raise the cost of every open shift

Fewer drivers means less room for scheduling errors. Today, 85% of US transit agencies struggle to fill bus operator positions (APTA), and the UK's shortfall exceeds 4,000 bus and coach drivers (CPT). The pressure isn't easing: Optibus's 2026 survey of 400 bus drivers found that one in four transit workers will retire by 2035.

Inefficient allocation with limited drivers has a price. At one US agency, 91% of transit operators — more than 2,500 people — worked overtime in 2024, totaling $41 million in annual overtime expenditure.

Manual allocation compounds the problem: the same drivers can repeatedly absorb the worst shifts or last-minute assignments, simply because a dispatcher working from memory is under pressure to fill a call-out. That pressure is only growing — one US agency reported roughly 20% of bus drivers absent on a given day. The side effect — unfair scheduling — is one of the strongest predictors of driver turnover.

The solution: an automated allocation engine, built into the platform

Optibus's Allocation Optimization adds a layer of efficiency and workforce retention to an operation. It determines the best match by evaluating driver and vehicle availability, preferences, work patterns, and regulatory rules in consecutive optimization runs — not by filling one duty at a time or handing a dispatcher a ranked list to confirm manually.

The engine covers two workflows:

1. Forward Optimization: Builds long-term duty allocation plans for operations that don't run advanced rostering. It optimizes around driver preferences, seniority, work patterns, days-off and holidays, and cost.
2. Operational Optimization: Handles same-day disruption. When a driver calls out, the engine re-matches open duties to available spare or volunteer drivers, conducting a compliant re-allocation in minutes, without disturbing the rest of an already-published schedule.

Across both, the compliance engine applies EU and domestic hours regulations, US union rules and collective bargaining agreements, minimum rest periods, and maximum work-time limits automatically.

By assessing the pool of available drivers and vehicles against every rule at once, Allocation Optimization allows operations to achieve:

• Time Savings: Accelerates long-term allocation planning from days to minutes, and resolves same-day disruptions — a sick call, a last-minute change — in minutes.
• Built-In Compliance: Applies complex regulatory, union, and company rules automatically as plans are generated, removing manual rule-checking, human errors, and bias.
• Cost Efficiency: Maximizes the bottom line by identifying the most efficient matches and reducing standby driver overhead. Instead of paying for unutilized "safety net" staff, Optibus ensures that open shifts are covered by the active roster rather than requiring expensive standby backup.
• Flexibility & Driver Retention: Improves driver satisfaction by managing complex rules alongside driver preferences (shift times, routes, and more) and seniority, and creates the scheduling flexibility and advance notice needed to help drivers plan accordingly. With fairer, more balanced scheduling, bus drivers are six times more likely to stay at their job, and more predictable schedules double job satisfaction.

"One in four transit workers will retire by 2035, and most operations are already feeling the strain. You can't simply hire your way out of that. You have to retain staff. We built Allocation Optimization because higher job satisfaction starts with fairer driver schedules and easier assignments. Now, operations have an intelligent driver and vehicle allocation engine that confronts those optimization problems and replaces the painful manual processes that powered them before," said Amos Haggiag, Optibus CEO and co-founder.

How operators are using Allocation Optimization

"Without a doubt, implementing Operations and Allocation Optimization, combined with Optibus' flexibility to adapt to our reality, has made us more efficient in developing plans that improve work distribution in an ever-changing environment while simultaneously optimizing associated costs. Every day, our teams become more adept at this new approach and are motivated to find more solutions in shorter timeframes," said Rainier Rojas, Operational and Technical Director, RBU Santiago - Transdev Chile.

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About Optibus

Optibus is a unified software platform for public transportation planning, scheduling, rostering, operations, real-time control, and passenger information, powered by artificial intelligence (AI) and optimization algorithms. In thousands of cities worldwide, transportation agencies and operators use Optibus to maximize the positive impact of public transportation on passengers and the planet, improve operational efficiency and service quality, promote transportation equity, reduce emissions and costs, and modernize operations. Learn more: www.optibus.com