When a first one-way traffic road becomes partially impassable because of roadworks, a second one-way traffic road temporarily replaces the first road and is used in a direction opposite to an original trafficable direction. Preferably, the coating treatment is performed by using a paint containing a phosphate. The rib includes a contact part for contacting the semiconductor element. As such, users of a group are permitted to select at least one of the response types and at least one of the presented concepts. Said reservoir is rigid and made from a high-performance synthetic material resistant to the pressure of the propellant gas, sad material having a low permeability to water and oxygen. Pushing the handle down pivots the arms, engages the couplings, and transmits a concentrated downward force to the front of the pressing assembly.