The speed on the motorway may be lowered for several possible reasons, including:
- To reduce fuel consumption and increase energy efficiency, especially in times of rising oil prices or geopolitical crises affecting fuel supply. Lower speed limits, such as reducing from 130 km/h to 110 km/h, have been shown to save significant amounts of fuel and reduce oil dependency.
- To improve road safety by decreasing the likelihood and severity of crashes. Lower speed limits on highways can reduce traffic fatalities and injuries, as slower speeds allow more reaction time and reduce crash impact forces.
- To reduce carbon emissions and the environmental impact of transportation. As transport contributes significantly to greenhouse gas emissions, lowering speeds on motorways helps cut carbon footprints.
- Due to temporary or variable traffic management measures such as congestion control, road works, construction, or system upgrades. Variable speed limits may be set to smooth traffic flow, prevent bottlenecks, or enhance driver safety during unusual conditions.
- In certain areas, speed limits may be lowered near safety zones, schools, or densely populated regions to protect vulnerable road users.
Overall, speed reductions on motorways are often motivated by fuel savings, safety improvements, environmental concerns, and traffic management needs. These points summarize common reasons why motorway speed limits might be lowered in a given area or time frame.
