EngineeringPushan · Class 9-10
Traffic ka hisaab, sadak ka design: NHAI ka naya code
Agar ek naya expressway ban jaaye, toh uspar kitna traffic aayega — sirf aaj jitna, ya usse zyada?
Socho pehle… phir dekho jawab
Zyada. Naye code mein engineer chaar tarah ka traffic ginte hain: existing (jo abhi hai), diverted (jo doosri sadak se idhar aayega), aur generated aur induced (jo nayi sadak ki wajah se naya paida hoga). Aur yeh andaaza toll transactions se check hota hai.
Pehle har consultant apne-apne standard par DPR (detailed project report) banata tha. Ab ek code: traffic PCU mein, aur lane uske hisaab se — 15,000 PCU tak 4 lane, 15,000-25,000 par 4 lane sadak lekin 6 lane ke structures, 25,000-40,000 par 6 lane. Freight aur 'vehicle damage factor' (koi gaadi sadak ko kitna ghisti hai) GST portal aur mining department ke data se check honge.
Vehicle damage factor kyun? NCERT yaad karo: pressure = thrust / area. Bhaari truck ka wazan tyre ke chhote area par aata hai, toh sadak par zyada pressure aur zyada ghisaav. Isliye sadak ki parat (pavement) truck traffic ke hisaab se design hoti hai.
Safety aur logon ka dhyaan: koi at-grade intersection nahi, sirf ramp; harvester-tractor ke liye 4.5 m underpass; basti mein service road aur naali-cum-footpath; bina barrier MLFF toll; 1 m RCC boundary wall. So what: aaj ka sahi design kal ka mehnga rework bachata hai.
Ghar pe try karo
Ek tray mein geeli mitti bichhao. Ek khilona truck ko pehle khaali, phir kuch sikkon se bhar ke mitti par chalao — nishaan kitna gehra? Phir mitti par gatte ki patti bichha ke dobara chalao. Wazan failaane ka kya asar hua? Ek line mein pressure = thrust / area se samjhao.
Wow!
Bharat ka target: 2036-37 tak 50,000 km high-speed corridor — December 2025 mein yeh sirf 3,052 km tha.
3 sawaal
- Naye code mein traffic ka andaaza kis se validate hoga?
Jawab dekho
Toll transactions se. Traffic assessment toll transactions se validate hoga.
- Vehicle damage factor kya batata hai?
Jawab dekho
Koi gaadi sadak ko kitna ghisti hai. Yeh naapta hai ki koi gaadi sadak ko kitna nuksaan (wear) pahunchati hai.
- 25,000-40,000 PCU ke liye kya niyam hai?
Jawab dekho
6 lane sadak aur 6 lane structures. Is range mein highway aur structures dono 6 lane ke.
NCERT se jodo: NCERT Class 10 Geography — lifelines of national economy (roadways); Class 9 Science — thrust aur pressure