How can we optimize the transport of aggregates from quarries?

In a aggregate quarry, a stationary dump truck is the most underestimated cost item in the road transport supply chain. Downtime at the weigh station—often attributed to the weighing process itself—can also be linked to the organization of upstream flows: multiple trips arriving during peak hours, a delayed loading operation, or mixed traffic consisting of company-owned trucks, chartered trucks, and customers picking up their goods directly.

Digital weigh tickets and onboard computing reduce transaction time at the gate, but they are not sufficient on their own. The TMS allows the carrier to organize its own transport schedule, while a quarry management software like Carsabe handles site-specific operations. The integration between the two then enables the flow of relevant information between the planned route and the truck’s actual passage through the quarry.

This issue goes beyond mere productivity: every minute of waiting time also counts as service time under Regulation (EC) No. 561/2006, which is enforceable against the driver and monitored by organizations such as the FNTR or the CNR. By linking transportation planning, quarry operations, and workforce management, Sinari enables better tracking of these various stages of aggregate transportation. This is the crux of optimizing aggregate transportation in quarries: ensuring reliable aggregate transport without slowing down the production rate.

The bottleneck isn’t just at the weigh station—it also lies in the organization of delivery routes

Transportation planning plays a key role in ensuring consistent arrivals at the quarry. However, the carrier does not control the scheduling at the loading or pickup site; instead, it organizes its own rotations based on orders to be fulfilled, available vehicles, drivers, and delivery constraints.

Queues at the quarry can thus form when multiple trucks converge on the site during peak hours. Several scheduled rotations by different carriers may arrive simultaneously; a customer may come to pick up their goods directly; or a load may be delayed on the production side. All these flows then converge at the same checkpoint.

The result is inevitable: when arrivals are concentrated within the same time period, dwell time at the gate increases. Transportation planning alone cannot manage all of these arrivals—particularly those from customers who arrange their own transportation—but it does allow the carrier to better organize the trips for which it is responsible.

Truck rotations at the quarry thus remain a key indicator of transportation performance. The more regular and predictable the rotations are, the easier it is to limit wait times and anticipate peak hours.

This is precisely where the role of the transportation operations manager comes into its own: he or she balances the constraints of clients, construction sites requiring delivery, fleet availability, remaining driving time, and the various operations scheduled for the day.

With a construction bulk transport TMS like Sinari TMS Ready, they can build their transport schedule by associating each run with the information needed for its execution: a vehicle, a client, a construction site or delivery location, the product to be loaded, as well as the information that will later be needed for the weigh ticket.

The TMS therefore does not manage the quarry’s loading schedule itself. Instead, it enables the carrier to organize its routes and prepare the necessary information even before the truck arrives on site.

Why is the line of trucks a symptom, not the cause?

The quarry queue refers to the visible buildup of trucks at a given moment, but it can have several causes: a concentration of arrivals during certain hours, production delays, heavier-than-expected traffic, or the overlap of multiple types of traffic flows.

The weighbridge remains a mandatory checkpoint, but the weighing process itself does not necessarily account for the entire wait. When multiple trucks arrive simultaneously during a peak hour, even the slightest delay in loading operations can quickly create a line.

The goal, therefore, is not merely to speed up the weighing process. It also involves, on the carrier’s side, organizing known rotations as efficiently as possible and having information readily available when the truck arrives at the quarry.

How can rotations be organized to better manage peak hours?

Scheduling rotations allows the carrier to define in advance the trips that will need to be made throughout the day.

Each rotation can correspond to a specific vehicle and operation. The schedule includes, in particular, the truck, the customer, the destination site, the product to be loaded, and the information needed to complete the transport.

The carrier can thus organize the order of its rotations and take into account—when known—the times when the site is typically busiest. However, this does not involve directly booking or managing loading slots at the quarry through the TMS: this scheduling remains the carrier’s responsibility.

The main benefit lies in the continuity of information. When a trip has already been prepared in TMS Ready, the relevant data does not need to be re-entered when the vehicle arrives at the quarry.

Thanks to the integration between TMS Ready and Carsabe, the truck’s visit to the site can thus be based on a transport operation that has already been prepared in advance.

How to manage mixed traffic: company-owned trucks, chartered trucks, and customers picking up cargo?

Mixed quarry traffic is undoubtedly one of the most challenging variables for an operator to manage, as it combines three distinct management approaches that do not follow the same rules or rely on the same information systems.

A company-owned truck follows the carrier’s schedule. A chartered truck is managed by a third-party company with which the transport must be coordinated. Finally, a customer who picks up their own goods organizes their own transport and can therefore arrive independently of the carrier’s schedule.

These three flows of heavy-duty trucks may all converge at the same site during peak hours.

The first aspect is visibility. For the flows it organizes itself, the carrier has information in its TMS corresponding to the scheduled rotations. It can identify the vehicles deployed, the assignments to be carried out, and the planned order of shipments.

However, this visibility does not extend to customers who come to pick up their goods on their own initiative: since they manage their own transportation, they cannot be incorporated into the carrier’s schedule in advance unless they have given advance notice.

It is only when the vehicle actually arrives on site that Carsabe provides additional information. Once the truck is identified at the weigh station, its arrival becomes visible in the quarry’s management system, and the information can be forwarded to the shipper.

The second sub-aspect concerns the fleet model itself: a carrier that combines company-owned trucks and chartered trucks must manage operations differently depending on the nature of the flow, since chartered trucks involve an additional layer of coordination.

The following two sections detail each of these aspects: how to maintain visibility over shipments entrusted to third parties, and how to adapt management depending on whether the fleet consists of owned, chartered, or a combination of both.

How can you maintain visibility over trucks that aren’t yours?

Visibility into chartered trucks is one of the common pain points in transportation planning: how can you properly track an operation carried out by a vehicle that does not belong to your own fleet?

The key challenge is, above all, to link the chartered transport to the same organizational structure as other scheduled assignments. This allows the available transport information to be centralized in the TMS and integrated into the operational schedule.

When a vehicle then arrives at a site equipped with Carsabe, its arrival can be recorded at the quarry. The carrier thus maintains its own tracking of the shipment, while the site operator has the necessary information to organize the loading operation.

Own Trucks or Chartered Trucks: Which Model Best Handles Peak Demand?

Owned trucks and chartered transport serve different purposes.

Owned trucks form the stable foundation of the fleet: they are managed end-to-end and available according to a schedule known in advance, but their fixed number limits absorption capacity beyond a certain activity threshold.

Chartered transport, on the other hand, involves mobilizing additional, ad-hoc capacity from subcontractors, which allows a company to handle a peak without tying up capital in vehicles that are underutilized the rest of the time.

The trade-off between the two is primarily a matter of fleet profitability: maintaining enough company-owned trucks to cover recurring business and reserving chartering for peak periods, rather than sizing the company’s own fleet based on the highest peak of the year.

Double-loading—when the quarry and the destination site allow it—remains another strategy for limiting empty runs and improving profitability.

This trade-off is managed much more effectively when all scheduled transports are visible in the same operational schedule.

Streamlining the weigh-in process through the digitization of the weigh slip

Streamlining the weigh-in process begins well before the weighbridge: it depends on how information flows between the carrier’s schedule, the truck, the weigh station, and the documents accompanying the shipment.

The paper weigh-in ticket clearly illustrates the limitations of the traditional system: it records a weigh-in at a specific moment, but it must then be entered, filed, and sometimes re-entered into another system, which introduces delays and risks of error at every stage of the administrative process.

The digital weigh ticket changes this process: it allows the weighed tonnage to be recorded digitally and linked to the relevant shipment.

This is precisely where the benefit of the integration between TMS Ready and Carsabe comes into play.

When preparing the transport schedule, the operations team has already entered the key details for the trip: the vehicle, the customer, the job site or delivery location, the product to be loaded, and the data needed to carry out the transport.

When a truck then arrives at the weigh station, its identification allows the system to retrieve the information corresponding to the scheduled shipment. For a truckload trip prepared in advance, the actual weight data thus supplements the information already on file, without having to manually recreate the entire waybill.

The integration between TMS Ready and Carsabe therefore saves time between the preparation of the shipment and its execution at the quarry.

It also facilitates the flow of information on the loading side. As soon as the vehicle is identified at the weigh station, its arrival can be viewed by the shipper on their Carsabe console. The shipper then has the information as soon as it becomes available and can prepare the corresponding operation.

This rapid transmission does not eliminate peak hours, but it reduces the time wasted searching for information or manually identifying the next operation to be carried out.

This is precisely the benefit of the integration: the TMS organizes transportation, Carsabe manages quarry operations, and relevant information flows between the two systems.

Weighbridge alone or weighing connected to the TMS: what’s the difference in downtime?

A weighbridge on its own and a weighing system connected to the transportation system produce the same physical measurement, but the way the information is processed is not the same.

A standalone weighbridge weighs the truck and outputs the corresponding information, without necessarily having the transportation context prepared in advance.

With a connection between Carsabe and TMS Ready, some of the information related to the trip already exists before the truck arrives: vehicle, customer, job site, product, or even the planned operation.

When the vehicle is identified at the weighbridge, this information can be matched to the weight measurement taken.

The benefit, therefore, does not come from a physically faster weighing process, but from the reduction in manual tasks associated with the truck’s passage: identification, searching for the relevant operation, re-entering information, and transmitting it to the loading area.

At a high-traffic quarry, every step eliminated helps reduce the cumulative processing time for vehicles.

How does the digital weigh ticket eliminate manual re-entry?

The digital weigh ticket addresses a specific problem that is often overlooked in traditional dashboards: manual re-entry.

This refers to the step where information already known or generated at the weighbridge must be manually transcribed into another system, with the associated risk of data entry errors or document loss.

When TMS Ready and Carsabe are integrated, the information prepared when the shipment is created can follow the truck until it arrives at the site.

The vehicle is identified, the corresponding shipment can be retrieved, and the actual weight completes the shipment data.

The benefit is therefore not just administrative: every instance of re-entry that is avoided also eliminates a potential source of error in billing and route tracking.

Truck at a standstill, on-duty time consumed: how can we balance operational efficiency with drivers’ labor rights?

A truck idling in a queue not only ties up a vehicle but also consumes the driver’s on-duty time, with direct consequences for the driver’s workday and the company’s compliance.

Legal service time refers to the total time during which the driver is at the employer’s disposal, whether driving, waiting, or loading, and is governed by Regulation (EC) No. 561/2006, which sets maximum driving times and mandatory rest periods.

The Transport Code goes further on this specific point: according to Articles L.3222-5 and L.3222-8, any excess of the vehicle’s availability time not attributable to the carrier entitles the driver to additional compensation for downtime costs, calculated based on the indicators published by the CNR.

A prolonged wait in line at a quarry is therefore never neutral, either from a social or a contractual standpoint.

This reality places the transport operator in a difficult position to resolve on their own: the quarry’s production pace dictates its own rhythm, independent of the driver’s schedule constraints, while compliance with legal duty hours imposes its own limits.

The carrier does not directly control this production pace from its TMS. However, it can organize its rotations by taking known constraints into account and monitor its drivers’ available time to better anticipate the consequences of a prolonged wait.

This is where the Sinari ecosystem comes into play: TMS Ready organizes routes, Carsabe handles quarry-related operations, and Sinari Time Management manages drivers’ HR data.

The flow of information between these different components gives operations a more comprehensive view of transportation and allows them to better anticipate the consequences of a delay or downtime.

How much does an hour of waiting at the weigh station cost a truck driver?

An hour of waiting at the weigh station is never free, even if no billing line item directly reflects it in the overall transportation cost.

Legal on-duty time includes this waiting time just as it does driving time, which means that a truck driver who is stuck at a quarry continues to use up their daily hour quota without moving the route forward by a single meter.

According to CNR data, driver personnel costs (including wages, employer contributions, and travel allowances) account for between 35% and 40% of a heavy-duty truck’s operating costs.

One hour of downtime at the weigh station therefore impacts this cost category exactly the same as one hour of driving: wages and payroll taxes continue to accrue, without any corresponding revenue generated.

It is this calculation that the HR manager of a transportation company must be able to reconcile with actual observed times.

When multiplied across a fleet of several trucks and multiple daily rotations, this discrepancy quickly becomes a significant source of loss ( and an obstacle to cost optimization) for the business.

What software connects scheduling, shift scheduling, and HR management for drivers?

It’s not necessarily about having a single software program manage all these operations, but rather about enabling the various business tools to exchange information.

The carrier must first be able to create its transport schedule: define the vehicle, the customer, the job site, the product, and all the information needed to complete each run.

This is the role of Sinari TMS Ready.

At the production site, Carsabe then takes over for operations specific to the quarry. When a truck arrives at the weigh station, it can be identified and matched to the scheduled transport. Its arrival can also be relayed to the loader, who views it on their console and immediately has the information needed to prepare the load.

Finally, drivers’ time and attendance data are tracked in Sinari Time Management.

The value, therefore, does not lie in combining these different functions into a single schedule, but in their interconnection: the TMS manages transportation, Carsabe manages the quarry, and information flows between the two at the moment it becomes useful.

This continuity reduces the need for re-entry, speeds up the transmission of information, and gives operations a more reliable view of how rotations are progressing.

A single workflow to manage, from transport scheduling to the driver’s pay stub

A continuous workflow, from transport preparation to tracking the driver’s time—that is ultimately what this article has sought to demonstrate: the optimization of aggregate transport does not depend on a single position, but on the continuity across multiple stages.

Downtime at the weighbridge can first be minimized by better organizing the carrier’s rotations and by taking into account, whenever possible, peak hours at the site.

This planning does not replace that of the quarry and does not allow for control over customer arrivals, as customers organize their own pickups. However, it does provide the transportation operations team with a clear overview of the routes it must carry out.

When creating a route in TMS Ready, the truck, the customer, the job site, and the product to be loaded are already linked to the operation.

When the vehicle then arrives at the quarry, Carsabe allows it to be identified at the weigh station and its arrival to be matched with the information already prepared. The loader can then be notified as soon as the vehicle’s arrival is confirmed and view it from their console.

The weigh ticket completes this seamless process by incorporating the actual tonnage recorded, without requiring all transport data to be re-entered.

Finally, the driver’s time can be tracked simultaneously using social management tools, so that waiting time at the quarry is also factored into operational management.

It is this synergy that the Sinari ecosystem enables: TMS Ready to organize transportation, Carsabe to manage quarry operations, and Time Management for driver time tracking, with information flowing between the various stages.

To see firsthand how to optimize quarry transportation through this continuity, a demonstration of the Sinari solutions remains the most direct way to evaluate them.