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all of the above
A monetary charge to discourage vehicles from entering a city centre
Emergency vehicles responding to an emergency
It can be nothing more than condensation when you first start the engine. But it may be more serious. White smoke from the exhaust can be a sign that coolant is entering the combustion chamber. Normally this would indicate a blown head gasket, but on some vehicles where the coolant flows through the intake manifold, it can indicate a blown intake gasket. Bottom line is, that if, coolant is entering the combustion chamber, you must find out from where. Are you loosing coolant, even a small amount? If you indeed have coolant entering the combustion chamber it will cause engine damage.It can be nothing more than condensation when you first start the engine. But it may be more serious. White smoke from the exhaust can be a sign that coolant is entering the combustion chamber. Normally this would indicate a blown head gasket, but on some vehicles where the coolant flows through the intake manifold, it can indicate a blown intake gasket. Bottom line is, that if, coolant is entering the combustion chamber, you must find out from where. Are you loosing coolant, even a small amount? If you indeed have coolant entering the combustion chamber it will cause engine damage.
A monetary charge to discourage vehicles from entering a city centre
A trench was used to stop or slow down vehicles and enemies from entering bunkers, forts, etc.
left
A light signal
An arrow is used to indicate direction. It is used to indicate the direction toward a place such as a city or a restroom. An arrow is also used as a signage on one-way streets to indicate the direction that vehicles should drive.
al vehicles are to stop
Center lane.
Center line