L-Tunnel (2024)

FAQs

What must you do at the entrance of a tunnel? ›

This is because luminance levels inside the tunnel are much lower than those outside and our eyes have difficulty adapting to the sudden difference. To alleviate this effect, a higher, “reinforced” level of lighting must therefore be provided at the tunnel entrance.

Stick to the speed limit: Observe all speed limits on the approaches to and through the tunnel – caution these may change. Safe distance: Always maintain a safe distance from the vehicle in front of you. For regular cars, leave at least a 2-second gap. Larger vehicles need a 4-second gap for safety.

Overtaking in a tunnel

Overtaking is prohibited in tunnels unless there is more than one lane for traffic flowing in one direction. If there is two-way traffic, you cannot approach from behind and pass a vehicle travelling in the same direction.

A tunnel is an underground or undersea passageway. It is dug through surrounding soil, earth or rock, or laid under water, and is enclosed except for the portals, commonly at each end.

However, due to the long air transport distance in the deep tunnel, the air flow on the ground has a higher temperature when it reaches the working face. In engineering practice, ventilation is usually combined with refrigeration at the same time [14,15,16].

Collapsed Indian tunnel had no safety exit, was built through geological fault - panel member | Reuters.

Just like passing a graveyard, some drivers hold the superstition that you should hold your breath as you drive through a tunnel. Supposedly, if you can make it the lenght of the tunnel without breathing, you can make a wish at the end and said wish will come true.

What to do if your car breaks down inside a tunnel? The engine must be switched off and the hazard warning lights must be turned on. You should stay in the car and have your seat belt buckled, then call the police immediately for help. Follow the tunnel officers' instructions, if any.

Users were then asked what these lights were for: the yellow lights are direction indicators for users evacuating on foot; the blue lights show the safety distance between two vehicles travelling at the speed limit in the tunnel.

Why turn on radio in tunnel? ›

This is because they often have 'wideband' transmitters inside the tunnel itself- doesn't matter what frequency you are tuned to, it will pick it up- and they use this to issue alerts, traffic warnings etc (as well as in many cases they will have multiple low powered transmitters that retransmit the actual local radio ...

A hillside tunnel entrance is called a portal; tunnels may also be started from the bottom of a vertical shaft or from the end of a horizontal tunnel driven principally for construction access and called an adit.