What is the meaning of wap4?

All over India. Disposition. Active. The Indian locomotive class WAP-4 is a class of 25 kV AC electric locomotives that was developed in 1993 by Chittaranjan Locomotive Works for Indian Railways. The model name stands for broad gauge (W), AC Current (A), Passenger traffic (P) engine, 4th generation (4).

What kind of headlights do trains use?

Much like those used for cars, train headlights typically combine a light source with a parabolic, or cup-shaped, reflective surface that focuses the emitted light into a beam. Although LEDs are a great option for saving energy, the most energy-efficient LEDs emit smaller spots of light.

Why do trains have ditch lights?

Ditch lights, also known as auxiliary lights, are additional lights at the front and sometimes rear of a locomotive or cab car that are positioned closer to the track than normal headlights. They are used to make trains easier to spot, for safety.

How bright are locomotive lights?

(1) If a locomotive is equipped with a single-lamp headlight, the single lamp shall produce a peak intensity of at least 200,000 candela and shall produce at least 3,000 candela at an angle of 7.5 degrees and at least 400 candela at an angle of 20 degrees from the centerline of the locomotive when the light is aimed …

What type of headlights do you need for your vehicle?

Low cost, simple to replace, and basically universal, halogen bulbs have been used in vehicles for decades. Even today, they are the most common type of headlights you’ll find on vehicles even if they don’t offer the best performance.

How far back should headlights be from the wall?

Reverse your vehicle in a straight line so that the front of the headlights are 7.62 meters (25 feet) back from the wall. The goal of these instructions is to aim BOTH of your headlights so that the Alignment Point is at the cross section of the horizontal X and vertical Y lines you have drawn.

Are LED headlights better than HID headlights?

Since the lighting technology has become more popular in other applications besides automotive, it has also become more affordable for automotive use. While they’re not as bright as HIDs, LED headlights are brighter and last longer than halogen bulbs.

What is the standard size of a headlight bulb?

In 1940, a consortium of state motor vehicle administrators standardised upon a system of two 7 in (178 mm) round sealed beam headlamps on all vehicles – the only system allowed for 17 years.