What to do when the trip plan changes during the day

In brief

In a small road-haulage company, the morning plan rarely reaches the evening unchanged. A customer delays loading, a consignee changes the unloading slot, a vehicle has a fault, a driver falls behind schedule, or an urgent order arrives. The issue is not avoiding every change: it is changing the plan without creating a second parallel version of the day.

The most useful method is to work from constraints. First protect what cannot be breached — safety, driving and rest times, vehicle and driver suitability, and goods requirements — then recalculate commercial priorities. Only at the end should the new plan be communicated to everyone concerned.

First rule: distinguish urgency from a constraint

When an unexpected event occurs, it is best to sort activities immediately into three groups:

1. non-negotiable constraints, such as regulatory limits, safety, vehicle incompatibility, essential documentation or a driver's actual unavailability;
2. negotiable constraints, such as a customer time slot that may perhaps be moved with a phone call;
3. preferences, such as the ideal delivery sequence or the wish to return a vehicle to a particular site when that is not strictly necessary.

This distinction prevents a common mistake: treating every request as equally urgent. If a customer calls saying “I need it by 16”, the first question is not which driver can hurry most, but which combination is actually feasible and compliant.

Driving and rest times do not “move” with the plan

Regulation (EC) No 561/2006 governs, for transport falling within its scope, driving limits and breaks. In general terms, the daily driving period may not exceed 9 hours, extendable to 10 hours no more than twice a week; after 4 hours and 30 minutes of driving, a break of at least 45 minutes is required, unless a rest period begins. There are also weekly and fortnightly limits and specific rules on daily and weekly rest.

From 1 July 2026, certain social rules and the tachograph requirement also extend to vehicles or combinations over 2.5 tonnes used for international carriage of goods or cabotage, subject to the exclusions provided for. For a small company using vans or light vehicles above that threshold, this change deserves a specific review.

The organisational point is simple: the dispatcher must know a driver's remaining capacity before assigning another activity. A diary showing only “free from 15” can be misleading if it does not account for driving hours already completed or rest periods that must be observed.

When Article 12 may come into play

Article 12 of Regulation 561/2006 allows a limited derogation from the rules in Articles 6–9 in particular circumstances, provided road safety is not jeopardised and within the necessary limits, for example to reach a suitable stopping place and protect people, the vehicle or the load. The driver must state the reason for the derogation on the prescribed record no later than on reaching the appropriate stopping place.

The changes introduced by the Mobility Package also provide for some limited possibilities to exceed times in exceptional circumstances in order to reach the place of residence or operational centre for weekly rest, subject to conditions, a record and compensation. These rules must be read in the current text; they are not permission to plan routinely beyond the limits.

For an SME, the management rule should therefore be: the derogation handles an unforeseen exception; it does not correct an unrealistic plan made upstream.

A 6-step replanning method

1. Freeze the previous version

Do not mentally erase the old plan. Record that it has been replaced and by which event: loading delay, breakdown, customer request or consignee unavailability.

2. Identify the affected activities

A two-hour delay on the first trip can move the second and third ones. Assess the chain, not only the order that caused the problem.

3. Check driver and vehicle constraints

Check availability, applicable driving/rest times, any qualifications, vehicle characteristics and compatibility with the goods.

4. Rebuild priorities

Ask which deliveries have a fixed time slot, which customers can accept a new time and which activities can move to another vehicle.

5. Assign one new version only

The new plan must become the official one. If the Excel sheet says one thing and the driver's chat says another, the operational risk remains open.

6. Close the communication loop

The customer, driver and internal coordinator must receive what they need for their role. There is no need to forward the whole conversation to everyone: everyone needs to know the relevant final decision.

How to communicate the change

An operational change should state at least:

• the activity concerned;
• the new time or sequence;
• any new address;
• a brief reason, if useful;
• new instructions replacing the previous ones;
• a request for confirmation when company procedure requires it.

Avoid phrases such as “do the second one first, then we'll see”. For someone driving, a precise message reduces calls and interpretation while on the move.

Practical example

Truck A is to load at 08:00 in Lodi, unload in Parma at 11:30 and then make a second collection at 14:00. The first warehouse runs two hours late.

The wrong response is to wait until 10 and then improvise. The structured response is to check immediately whether the second collection can be moved, whether truck B can take it on, how many hours the two drivers have left and which customer must be informed. Once the solution is chosen, the plan is updated and the old instructions cease to apply.

Emergency checklist

• What event changed the plan?
• Which subsequent orders are affected?
• How much driving time and which rest period remain for the drivers concerned?
• Is the alternative vehicle suitable for the goods?
• Which customer time slots are genuinely fixed?
• Has the new sequence been communicated to the driver?
• Has the previous version been clearly superseded?
• Is the reason for the change recorded?

Common mistakes

Thinking only about the urgent order. Every change can have knock-on effects.

Using the driving-time derogation as an ordinary margin. Regulatory exceptions must remain exceptions and require the conditions set by the rule.

Changing the plan without checking the driver. “The truck is free” does not automatically mean the driver can make another trip.

Informing the customer but not updating the person who carries out the work. Commercial and operational communication must both be closed.