All children should be safe when walking to or from school as well as around the school area.When there is a constructions site near the school or in close connection to the schoolyard therecan be significant problems with safety. This bachelor thesis is written to makesure that children feel safe and comfortable around the school premises regardless of anew school building being built or renovations of an old one is taking place. This thesis is being written for Enköpings municipality but is applicable to all municipalities in Sweden. This work proceeds from the construction of Nya Westerlundska gymnasiet which isan upper secondary school that is being planned and build during the time of this study. The 2030 Agenda that contains goals from the United Nations(UN) amongst Quality Education is being discussed together with goals from the EuropeanUnion, Sweden and Enköping. It is important that the education keep the same quality even if there is a construction site in the area, hence why the question about childrens safty around construction sites is important. The work has partly been executed by comparing administrative regulations from previously built schools in the municipality to see what the requirements have been before concerning children’s safety. People that have been working with similar projects and with Westerlundska was interviewed.Thenceforth the interviews were compared with the administrative regulations and recommendations for future projects where made. The conclusion where that Enköpings municipality have made many good safety measurements regarding construction projects around schoolchildren. In the future the municipality can make similar requirements andjust adding a few for specifics. The municipality will not be hindered by Swedish law to do so. It also became clear that cooperation and direct communication between the school, the construction site and the municipality is of the utmost importance. / Alla barn och ungdomar ska vara trygga och bekväma i sina skolmiljöer och när de tar sig till och från skolan. När det sker en omfattande tillbyggnad eller ombyggnation vid skolan kan det uppstå problem med trygghet och säkerhet. Det här examensarbetet har gjorts för att komma fram till hur kommun och byggföretag borde gå tillväga och samarbeta för att behålla samma trygga skolmiljö även under byggnationen. Examensarbetet är utfört i samarbete med Enköpings kommun men det som tas upp är applicerbart på alla kommuner runt om i Sverige. Arbetet utgår ifrån byggnationen av Nya Westerlundska gymnasiet som är en skola vars byggnation planeras under tiden som arbetet skrivs. Att det finns globala och nationella hållbarhetsmål som behöver försökas nås, däribland god utbildning för alla, tas upp i detta arbete. Det är viktigt att utbildningen håller samma nivå även när det händer saker omkring skolområdet, därför är frågan om barns säkerhet vid byggnationer viktig. I arbetet jämförs administrativa föreskrifter från tidigare byggda skolor i Enköpings kommun för att se vilka skolor som har specificerade krav som gynnar skolbarns säkerhet vid byggnationen. Personer som på olika sätt har med skolbyggnationer att göra i Enköpings kommun har intervjuats för att få olika perspektiv i arbetet. Därefter jämfördes personernas intervju med de administrativa förskrifterna för att få fram vad som tidigare gjorts bra och vad som rekommenderas att göras vid framtida byggprojekt. Slutsatsen för arbetet är att Enköpings kommun har gjort många bra säkerhetsåtgärder inför byggprojekt runt skolbarn i kommunen. Det går att säkerställa säkerheten även i fortsättningen genom att lägga in krav i de administrativa föreskrifterna och att det inte hindras av Lagen om offentlig upphandling (LOU). Det blev också tydligt i och med rapporten att samverkan mellan skolverksamhet, beställare och entreprenör under entreprenadtiden är av högsta vikt.

In Sweden, there has been an long term effort to allow as heavy traffic as possible, provided thatthe road network can handle it. This is because heavy traffic offers a competitive advantage withsocio-economic gains. In July 2018, the Swedish Transport Administration made 12 percent ofthe Swedish road network avaliable for the new maximum vehicle weight of 74 tonnes, basedon a legislative change from 2017. It is known that heavy traffic has a negative effect on thedegradation of the road, but it prevails divided opinions on whether 74 tonnes have a greaterimpact on the degradation rate compared to previous maximum gross weights of 64 tonnes.The 74 tonne vehicles have the same allowed axle load, which means more axles per vehicle. Some argue that an increased total load and more axles affect the degradation associated withtime-dependent material properties, while others argue that 74 tonnes mean fewer heavy vehiclesoverall, and thus should have a positive impact on the road’s lifespan. The construction companySkanska therefore requests a statistical analysis that enables to nuance the effects that heavytraffic has on the Swedish state road network. Since there is very limited data on the effect of 74 tonne traffic, this Master thesis instead focuseson modeling heavy traffic in general in order to be able to draw conclusions on which variablesare significant for a road’s lifetime. The method used is survival analysis where the lifetimeof the road is defined as the time between two maintenance treatments. The model selectedis the semi-parametric ’Cox Proportional Hazard Model’. The model is fitted with data froman open source database called LTPP (Long Term Pavement Performance) which is providedby the National Road and Transport Research Institute (VTI). The result of the modeling ispresented with hazard ratios, which is the relative risk that a road will require maintance atthe next time stamp compared to a reference category. The covariates that turned out to besignificant for a road’s lifetime and thus are included in the model are; lane width, undergroundtype, speed limit, asphalt layer thickness, bearing layer thickness and proportion of heavy traffic. Survival curves estimated by the model are also presented. In addition, a sensitivity analysis ismade by exploring survival curves estimated for different scenarios, with different combinationsof covariate levels.The results is then compared with previous studies on the subject. The most interesting finding isa case study from Finland since Finland allow 76 tonne vehicles since 2013. In the comparison,the model’s significant variables are confirmed, but the significance of precipitation and thenumber of axes for a roads lifetime is also highlighted