The maintenance of most roads takes more time and money than budgeted, but the maintenance of Beijing-Tianjin-Tangzhou Expressway and similar roads in the summer and night of the previous year did not cost more time or money than budgeted. Therefore, in summer, night maintenance Major roads may save time and money.
In summer, there are fewer vehicles on the road at night, and the temperature is more comfortable, allowing road repairers to work faster best supports the above conclusions.