In order to increase the pod density on the track to enable more pods to be accommodated, pods going to the same interim point would join together in a chain. This would be achieved through front and rear mounted radar controlled variable electro magnets, seamlessly linking pods as they need to join a chain, and releasing them as they approach their exit
This would eliminate the potential of crashing into the pod in front and would also enable them to travel safely at higher speeds reducing journey time, while taking up less ground space by being closer together

New pods joining
New pods joining the chain would be accommodated by opening up a gap in the existing chain just before arrival at a junction and the new pod would slot in to the gap by being accelerated to the appropriate speed at the precise time. Following the inclusion of the new pod, the gaps each end of the new pod would close up.

Pods approaching their exit point would be magnetically disconnected from the chain and switched electromechanically to the new direction.
Standardisation is required to ensure that a pod can accelerate at a high enough rate to slot in. 
Inter pod movement
No movement would be possible between pods, and hence no interruption or intrusion from other travellers. Each individual pod would leave its start point whenever it was required. If no other pods were travelling on that route at that time, it could travel entirely on its own.

The whole system would be an automatic delivery system. You get into your pod, set the destination, and then do whatever else you want to until you arrive

Billing
Billing would be calculated from the number of markers the pod passes. System. Travel costs would be calculated for the total transported mass. This would include the basic pod, its fitments and accessories, luggage, cargo freight, people. No distinction would be made in differentiating types of cargo. Weighpoints built into the track at various points would check the weight of each pod and set the tariff and calculate the charge as it is the mass moved that determines the cost of the electricity used. Any overweight pods would be rejected and parked until sufficient mass was transferred to another pod for the journey to continue.
Travel charges would be passed through to a centralised billing system taking funds from personal debit or credit cards.