structural:summarization
Vehicle collisions

The center of mass of a moose is above the hood of most passenger cars. In a collision, the impact crushes the front roof beams and individuals in the front seats. Collisions of this type are frequently fatal; seat belts and airbags offer little protection. In collisions with higher vehicles (such as trucks), most of the deformation is to the front of the vehicle and the passenger compartment is largely spared. Moose collisions have prompted the development of a vehicle test referred to as the " moose test " (Swedish: Älgtest, German: Elchtest). A Massachusetts study found that moose–vehicular collisions had a very high human fatality rate and that such collisions caused the death of 3% of the Massachusetts moose population annually.

Moose warning signs are used on roads in regions where there is a danger of collision with the animal. The triangular warning signs common in Sweden, Norway, and Finland have become coveted souvenirs among tourists traveling in these countries, causing road authorities so much expense that the moose signs have been replaced with imageless generic warning signs in some regions.

In Ontario, Canada, an estimated 265 moose die each year as a result of collision with trains. Moose–train collisions were more frequent in winters with above-average snowfall. In January 2008, the Norwegian newspaper Aftenposten estimated that some 13,000 moose had died in collisions with Norwegian trains since 2000. The state agency in charge of railroad infrastructure (Jernbaneverket) plans to spend 80 million Norwegian kroner to reduce collision rate in the future by fencing the railways, clearing vegetation from near the tracks, and providing alternative snow-free feeding places for the animals elsewhere.

In the Canadian province of New Brunswick, collisions between automobiles and moose are frequent enough that all new highways have fences to prevent moose from accessing the road, as has long been done in Finland, Norway, and Sweden. A demonstration project, Highway 7 between Fredericton and Saint John, which has one of the highest frequencies of moose collisions in the province, did not have these fences until 2008, although it was and continues to be extremely well signed. Newfoundland and Labrador recommended that motorists use caution between dusk and dawn because that is when moose are most active and most difficult to see, increasing the risk of collisions. Local moose sightings are often reported on radio stations so that motorists can take care while driving in particular areas. An electronic "moose detection system" was installed on two sections of the Trans-Canada Highway in Newfoundland in 2011, but the system proved unreliable and was removed in 2015.

In Sweden, a road will not be fenced unless it experiences at least one moose accident per km per year.

In eastern Germany, where the scarce population is slowly increasing, there were two road accidents involving moose since 2000.