07/09/2019
In an increasingly interconnected world, the way we travel is constantly evolving. While traditional public transport networks like buses and trains form the backbone of urban and inter-city mobility, they often fall short in providing flexible, convenient, and comprehensive coverage, especially in less densely populated areas or during off-peak hours. This is where the innovative concept of Demand Responsive Transport (DRT) comes into play, a flexible and passenger-centric approach to public transport that is gaining significant traction. At its heart, DRT aims to bridge these crucial gaps, offering a service that adapts to the needs of the passenger rather than expecting the passenger to adapt to a rigid schedule. It’s a paradigm shift towards a more fluid and responsive transport ecosystem, and it holds immense potential for the future of local travel, particularly within the UK.

What is Demand Responsive Transport (DRT)?
Demand Responsive Transport, often referred to as DRT, is a form of shared public transport where vehicles operate without a fixed route or timetable, instead adjusting their journeys based on passenger requests. Unlike conventional bus services that follow predetermined routes at set times, DRT services pick up and drop off passengers at designated points or, in some cases, kerbside, responding to bookings made in advance or even at short notice. Think of it as a hybrid between a traditional bus service and a private taxi – offering the convenience and flexibility of a taxi with the shared, more economical nature of public transport. The core principle is efficiency: vehicles are dispatched only when and where there is demand, optimising resource utilisation and reducing unnecessary mileage.
This innovative model is not entirely new; variations have existed for decades, often known as 'dial-a-ride' or 'community transport' schemes. However, advancements in technology, particularly in mobile applications, real-time tracking, and sophisticated routing algorithms, have transformed DRT into a highly efficient and scalable solution. These technological leaps allow operators to manage complex booking systems, optimise routes dynamically, and provide passengers with real-time updates, making the service more reliable and user-friendly than ever before.
The Anruf-Sammel-Taxi (AST) Model: A Prime Example of DRT
The 'Anruf-Sammel-Taxi' (AST), which translates from German as 'Call-Collective-Taxi' or 'Shared-Call-Taxi', offers a compelling example of how DRT principles can be successfully implemented. The information provided highlights AST as a specific form of public transport that utilises specially marked taxis or rental cars. Its primary purpose is to supplement existing fixed-route bus services, particularly in areas or during times when traditional bus services are infrequent or non-existent. For instance, in Losheim am See, the AST fills service gaps between 8:00 and 22:30, ensuring that residents have access to transport even when the regular buses aren't running.
The operational mechanics of an AST service are straightforward yet highly effective. Like a bus, it operates from designated departure points, which often include all existing bus stops, plus additional specific AST stops. However, unlike a bus, the AST does not follow a fixed route once it departs. Instead, it travels to any desired destination within a defined service area, such as the entire municipality of Losheim am See. This flexibility is crucial for serving areas with dispersed populations or for providing crucial 'last-mile' connectivity that traditional public transport struggles to offer. The 'call' aspect means that the service is on-demand; it only operates when a passenger has booked a ride. The 'collective' aspect implies that the taxi may pick up and drop off multiple passengers travelling in broadly the same direction, making the service more efficient and affordable than a private, single-passenger taxi.
When Does an AST Trip Operate? Understanding the On-Demand Nature
One of the most frequently asked questions regarding services like AST is, 'When will a scheduled journey operate?' The answer lies in the 'Anruf' (call) part of its name: an AST trip operates when it is requested by a passenger. While there might be a schedule of potential operating hours (e.g., 8:00 to 22:30 in the given example), the actual journey only commences upon a booking. This means there isn't a fixed timetable in the conventional sense where a vehicle runs whether or not there are passengers. Instead, the service is demand-driven. If no one calls to book a ride, no AST vehicle is dispatched. This ensures that resources are not wasted on empty journeys, leading to a more sustainable and cost-effective transport solution.
Passengers typically need to book their AST journey a certain amount of time in advance – this could be anything from 30 minutes to a few hours, or even the day before, depending on the specific service rules. This allows the operator to group multiple passenger requests into efficient routes, optimising the vehicle's journey and potentially offering a shared ride experience that benefits everyone involved.
Benefits of Demand Responsive Transport (DRT) and AST
The advantages of implementing DRT models like AST are manifold, benefiting passengers, communities, and transport operators alike:
- Enhanced Accessibility: DRT services can reach areas poorly served by conventional public transport, providing vital links for those living in rural or suburban areas, or for individuals with mobility challenges. This significantly improves social inclusion.
- Flexibility and Convenience: Passengers can travel at times that suit them, within the operating hours, rather than being tied to rigid schedules. This is particularly beneficial for late-night travel or for connecting to other transport modes.
- Cost-Effectiveness: For operators, DRT can be more economical than running large, empty buses on fixed routes, especially during off-peak hours. For passengers, it offers a more affordable alternative to private taxis while providing more flexibility than a bus.
- Reduced Traffic Congestion and Emissions: By encouraging shared rides and reducing the need for private car use, DRT contributes to lower traffic volumes and a reduction in carbon emissions, supporting environmental sustainability goals.
- Tailored Service: The ability to choose a specific destination within the service area (rather than just a bus stop) adds a layer of personalised service not found in traditional public transport.
- Community Support: DRT can support local economies by providing transport options for accessing shops, services, and employment opportunities that might otherwise be out of reach.
Challenges and Considerations for DRT Implementation
Despite the numerous benefits, implementing and operating successful DRT services is not without its challenges:
- Operational Complexity: Managing dynamic routes, real-time bookings, and vehicle dispatch requires sophisticated software and skilled operational staff.
- Public Awareness and Adoption: As a less conventional service, DRT requires significant marketing and public education to ensure potential users understand how it works and are encouraged to use it.
- Funding and Sustainability: While potentially more efficient than empty buses, DRT services may still require subsidies, especially in low-demand areas, to ensure their long-term viability.
- Integration with Existing Networks: Seamless integration with established bus, train, and taxi services is crucial to create a cohesive and comprehensive transport system.
- Regulatory Framework: Licensing, insurance, and safety regulations for DRT services, especially those using taxis or private hire vehicles, need to be carefully considered and adapted.
DRT in the UK Context: The Future of Local Mobility
In the UK, the concept of Demand Responsive Transport is gaining significant momentum, especially as local authorities seek innovative ways to improve connectivity and reduce carbon footprints. Many areas already operate forms of DRT, often under names like 'Connect Bus', 'Flexibus', or 'On-Demand Travel'. These services aim to address transport poverty, particularly in rural communities, and provide alternatives to private car ownership.
The UK government and local transport authorities are increasingly exploring DRT as a key component of future transport strategies. Funding initiatives and pilot programmes are testing various models, often leveraging new digital platforms that allow for easy booking via apps or phone. This digital transformation is making DRT more accessible and efficient than ever before, moving it from a niche community service to a mainstream public transport option.
For the taxi industry, DRT represents both a challenge and an opportunity. While it may appear to compete with traditional taxi services, it also opens new avenues for partnerships with local authorities, providing a steady stream of work for taxi and private hire operators who can integrate into these schemes. It also positions taxis as part of a broader, more sustainable public transport network, rather than just a premium, individual service. This collaboration can lead to more efficient use of taxi fleets, particularly during off-peak hours, and can help to secure the long-term viability of local taxi businesses.
Comparative Overview: DRT/AST vs. Traditional Transport
To better understand the distinct advantages of DRT models like AST, let's compare them with traditional bus services and conventional private taxis:
| Feature | Demand Responsive Transport (DRT)/AST | Traditional Bus Service | Conventional Private Taxi |
|---|---|---|---|
| Route Flexibility | Dynamic, adapts to passenger demand within service area. | Fixed, predetermined routes. | Direct, point-to-point as requested. |
| Schedule | On-demand within operating hours, no fixed timetable. | Fixed, published timetable. | On-demand, available 24/7 (subject to availability). |
| Booking Method | Advance booking (phone/app/online). | No booking needed, just turn up. | Hail, phone, app booking. |
| Cost | Typically fare-based, often similar to bus fares or slightly higher, but cheaper than private taxi. | Fixed fare, usually lowest cost per journey. | Metered or fixed fare, generally highest cost per journey. |
| Shared Ride | Yes, passengers often share the vehicle. | Yes, common. | No, typically private (unless ride-sharing is chosen). |
| Pickup/Drop-off | Designated stops (bus stops + special AST stops) or virtual stops. | Fixed bus stops only. | Any legal pickup/drop-off point. |
| Ideal Use Case | Filling gaps in public transport, rural areas, off-peak hours, last-mile connectivity. | High-demand routes, urban areas, regular commuting. | Direct, immediate, private travel; luggage, specific times. |
Frequently Asked Questions about On-Demand Taxis / DRT
Q: How do I book an On-Demand Taxi or DRT service?
A: Booking methods vary by service, but common options include dedicated mobile apps, online booking portals, or a traditional phone call to a booking centre. Many services require advance booking, ranging from 30 minutes to several hours before your desired travel time. Some may offer immediate booking if a vehicle is available nearby.
Q: Is an On-Demand Taxi cheaper than a regular taxi?
A: Generally, yes. Because On-Demand Taxi (DRT) services often involve shared rides and are designed to complement public transport, their fares are typically lower than those of a private, conventional taxi. They aim to offer a price point that is more accessible, often comparable to or slightly higher than standard bus fares, but significantly less than a private taxi journey for a single passenger.
Q: Who is Demand Responsive Transport suitable for?
A: DRT is suitable for a wide range of passengers. It's particularly beneficial for residents in rural or suburban areas with limited fixed-route public transport, individuals needing to travel during off-peak hours when bus services are infrequent, people with reduced mobility who might struggle with standard bus routes, and those seeking a more flexible and convenient alternative to traditional public transport without the higher cost of a private taxi.
Q: Are On-Demand Taxi services available everywhere in the UK?
A: Not yet. While the concept is growing in popularity, DRT services are usually implemented by local councils or transport authorities in specific areas where there's a identified need, often to fill gaps in existing public transport networks. You'll need to check with your local council or transport provider to see if an On-Demand Taxi or DRT service operates in your area.
Q: Can I request an On-Demand Taxi to my doorstep?
A: It depends on the specific service. Some DRT models operate 'virtual stops' or 'kerbside pickups' that are very close to a passenger's desired location, offering a near door-to-door service. Others, like the AST example, operate from designated bus stops or special DRT stops. Always check the service guidelines for your specific area.
Q: Do On-Demand Taxis run on weekends or public holidays?
A: The operating hours, including weekend and public holiday service, are determined by the individual service provider. The AST example operates between 8:00 and 22:30. Many DRT services aim to provide extended hours beyond typical bus services to cater to evening and weekend demand, but it's essential to consult the specific timetable or booking system for the service you intend to use.
Conclusion
The advent of Demand Responsive Transport, exemplified by models like the Anruf-Sammel-Taxi, marks a significant leap forward in creating more flexible, efficient, and inclusive public transport systems. By harnessing technology and embracing an on-demand approach, these services are effectively bridging the gaps left by traditional fixed-route networks, particularly in underserved areas or during off-peak hours. For the UK, the widespread adoption of DRT could revolutionise local travel, offering sustainable and accessible mobility options that benefit individuals, communities, and the environment. As urban and rural landscapes continue to evolve, flexible taxi solutions like these are not just an alternative; they are becoming an indispensable part of a modern, responsive transport future.
If you want to read more articles similar to On-Demand Taxis: Redefining UK Local Travel, you can visit the Taxis category.
