Once again, this is very important and is almost always asked on the written exam. Remember: 1  With the service brake depressed, the air loss rate should be less than 3 psi in 1 minute for single vehicles.  With the service brake depressed, the air loss rate should be less than 4 psi in 1 minute for combination vehicles.
Curfews are also challenged on constitutional grounds. The first youth curfew was adopted by Omaha, Nebraska in 1880. Chicago, the nationâs largest city with a curfew, passed its law in 1955. By 1960, 60 of the 110 US cities with a population over 100,000 had curfews. Thirty years later, 200 US cities had a population over 100,000, and 150 of these cities had curfews.
Juvenile Curfews. Local ordinances and state statutes may make it unlawful for minors below a certain age to be on public streets, unless they are accompanied by a parent or an adult or on lawful and necessary business on behalf of their parents or guardians.