Desafíos y Soluciones para la Movilidad Urbana en Proyectos de Construcción

Construction projects in urban settings generate significant disruptions to city mobility. According to a study by the Transport Research Laboratory (TRL, 2022), a medium-sized residential building site — between 50 and 150 dwellings — generates an average of 85 heavy vehicle movements per day (material deliveries, waste removal, machinery), increasing traffic congestion on adjacent streets by between 18% and 28%. In cities like London, where at any given time more than 3,000 sites are active, the cumulative impact of construction logistics accounts for 15% of the city's total heavy vehicle traffic and contributes to 38% of cyclist and pedestrian deaths caused by heavy vehicles.

The temporal dimension of the problem worsens these challenges: ready-mix concrete deliveries must be made within 90-minute windows from leaving the plant to prevent setting, which concentrates mixer trucks during rush hour between 7:00 and 9:30 in the morning. Data from the Barcelona City Council (2023) reveal that 67% of deliveries to urban construction sites occur between 7:00 and 11:00, coinciding with peak pedestrian and cycling activity. This temporal concentration multiplies accident risk: the crash rate for construction vehicles in urban areas is 4.3 times higher than for conventional delivery vehicles, according to Eurostat (2022) data.

Construction Logistics Plans (CLPs) are the primary tool for mitigating the impact of building works on urban mobility. In London, a CLP has been mandatory since 2017 for any site generating more than 50 heavy vehicle movements per day, under the CLOCS (Construction Logistics and Community Safety) standard. A typical CLP includes: designated routes for heavy vehicles that avoid school and residential zones, staggered delivery windows, slot booking systems accurate to 30 minutes, and contingency plans for road blockages. The evaluation of the CLOCS programme conducted by TfL (2023) documented a 46% reduction in road safety incidents involving construction vehicles since its implementation.

Slot management technology has transformed delivery planning. Platforms such as Construct Connect and CIMS (Construction and Infrastructure Management System) enable sites to schedule each delivery within 15-30 minute windows, spreading movements throughout the day and eliminating truck queues that used to block adjacent streets. In the Battersea Power Station project in London, slot management reduced average vehicle waiting times from 45 minutes to under 10 minutes and distributed 72% of deliveries outside peak hours. The system processed more than 320,000 deliveries over the 8-year construction period, with a scheduled-slot compliance rate of 89%.

Last-mile solutions for urban construction projects seek to replace conventional heavy vehicles with less intrusive alternatives. Waterway transport offers an effective option in cities with navigable networks: during the construction of the Thames Tideway Tunnel in London (2018-2024), 4 million tonnes of excavated material were transported along the Thames, avoiding 500,000 truck movements through central streets. In Paris, the company Cemex has operated a floating concrete plant on the Seine since 2021, supplying riverside sites directly and eliminating 3,500 truck journeys annually while reducing logistics emissions by 80% compared to road supply.

Light electric vehicles and cargo bikes are gaining traction for low-volume material deliveries. In Utrecht, the Zero Emission Construction Logistics programme has required since 2023 that all deliveries under 250 kg in the historic centre be made with zero-emission vehicles. Electric cargo bikes with a capacity of up to 350 kg, manufactured by companies such as Urban Arrow and Riese & Muller, cover 18% of deliveries to city-centre construction sites, including tools, electrical fittings, paints and hardware. In Copenhagen, contractor NCC documented that using cargo bikes for smaller deliveries reduced last-mile logistics costs by 32% and completely eliminated delivery vehicle parking problems at sites with restricted access.

Municipal regulations specific to construction-related mobility have proliferated across Europe over the past decade. Stockholm implemented the SMCL (Stockholm Model for Construction Logistics) programme in 2020, requiring consolidation centres for every project with a budget exceeding 50 million kronor (approx. 4.4 million euros). The evaluation carried out by KTH Royal Institute of Technology in 2023 demonstrated that the model cut the number of direct deliveries to sites by 68% and associated emissions by 42%. The additional cost of the consolidation centre represented only 0.8% of the total project budget, compared to productivity savings equivalent to 2.3%.

Oslo has positioned itself as a benchmark with its goal of zero-emission construction sites by 2030. Since 2019, the city has required electric or biofuel-powered machinery on all public projects, and since 2022 has extended the requirement to material delivery vehicles in the central zone. The programme has driven the adoption of more than 200 electric machines and 45 electric trucks dedicated to construction works in the Norwegian capital. Madrid, through its 2018 Sustainable Mobility Ordinance (updated in 2022), restricts construction vehicles over 12 tonnes from entering the area inside the M-30 ring road between 7:00 and 22:00, except with specific authorization that requires the use of designated routes and notification of delivery times 48 hours in advance to the Mobility Management Centre.