Edit
Edit
May 2026
- MON
- TUE
- WED
- THU
- FRI
- SAT
- SUN
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
Noida to Dudu AC Semi-Sleeper Bus
- Goibibo
- Bus Ticket Booking
- Bus from Noida to Dudu
- Noida to Dudu AC Semi-Sleeper Bus
Showing54 buses
Next Day
Sort by:
BESTRATINGDEPARTUREARRIVALFASTESTCHEAPEST
Noida to Dudu Other Buses
OJAS TOUR AND TRAVEL A/C Seater / Sleeper (2+1) 4.3/5 | 20:00 ISBT Kashmiri Gate 8h 5m 04:05 28th May Dudu bypass | ₹1509 | SELECT SEAT 14 window seat 23 seats left ₹ 1509 |
| |||
Ram Dalal Holidays Pvt Ltd Bharat Benz A/C Seater /Sleeper (2+1) 4.5/5 9 Reviews
| 22:50 ISBT Kashmiri Gate 6h 40m 05:30 28th May DUDU | ₹799 | SELECT SEAT 24 window seat 41 seats left ₹ 799 |
| |||
Mahadev Travels JOD Bharat Benz A/C Sleeper (2+1) 4.2/5
| 15:00 Mahadev Travels,Sankar Market, Tis Hazari Court, ShopNo-38-39, Gate No 5, Delhi 7h 0m 22:00 28th May BYPASS DUDU | ₹3000 | SELECT SEAT 10 window seat 14 seats left ₹ 3000 |
| |||
Mahadev Travels JOD A/C Sleeper (2+1) 4.2/5
| 21:00 Mahadev Travels,Sankar Market, Tis Hazari Court, ShopNo-38-39, Gate No 5, Delhi 7h 0m 04:00 28th May BYPASS DUDU | ₹3200 | SELECT SEAT 22 window seat 36 seats left ₹ 3200 |
| |||
Mahadev Travels JOD Bharat Benz A/C Sleeper (2+1) 4.2/5
| 20:15 Mahadev Travels,Sankar Market, Tis Hazari Court, ShopNo-38-39, Gate No 5, Delhi 7h 15m 03:30 28th May BYPASS DUDU | ₹3000 | SELECT SEAT 22 window seat 36 seats left ₹ 3000 |
| |||
Mahadev Travels JOD Bharat Benz A/C Sleeper (2+1) 4.2/5
| 18:00 Mahadev Travels,Sankar Market, Tis Hazari Court, ShopNo-38-39, Gate No 5, Delhi 7h 0m 01:00 28th May BYPASS DUDU | ₹2510 | SELECT SEAT 24 window seat 38 seats left ₹ 2510 |
| |||
Babu Travels Bharat Benz A/C Seater /Sleeper (2+1) 4.1/5 | 18:30 Morigate 7h 30m 02:00 28th May BYPASS DUDU | ₹2999 | SELECT SEAT 14 window seat 21 seats left ₹ 2999 |
| |||
Babu Travels Bharat Benz A/C Seater /Sleeper (2+1) 4.1/5 | 18:00 Morigate 7h 30m 01:30 28th May BYPASS DUDU | ₹2999 | SELECT SEAT 10 window seat 16 seats left ₹ 2999 |
| |||
VGO Bus VE A/C Seater / Sleeper (2+1) 4.1/5 | 16:15 SUNEHRI MASJID PARKING RED FORT 9h 15m 01:30 28th May Dudu Bypass | ₹1800 | SELECT SEAT 16 window seat 27 seats left ₹ 1800 |
| |||
Chanakya Travels Agency A/C Sleeper (2+1) 4.0/5 | 21:30 Morigate 7h 0m 04:30 28th May Dudu | ₹900 | SELECT SEAT 22 window seat 36 seats left ₹ 900 |
|
FAQs About AC Semi-Sleeper Buses from Noida to Dudu
Q. How many AC Semi-Sleeper buses currently operating from Noida to Dudu?
A. There are 0 AC Semi-Sleeper buses currently running from Noida to Dudu currently. Book Now
Q. What is the avg time taken by AC Semi-Sleeper bus for Noida Dudu Journey?
A. The time taken for Noida to Dudu by AC Semi-Sleeper bus via road travel is around 4h 5m (appx.). Book Now
Q. What is the cheapest bus fare between Noida to Dudu Travel on Goibibo?
A. The cheapest bus fare available between Noida to Dudu is ₹ 600. Book Now
Q. What are the popular bus operators currently serving buses for Noida to Dudu route?
A. Our top bus operators for Noida to Dudu bus route are: Ajay Travels Neemuch, Anshi Raj Shree Travels, Ashok Travels Mandsaur Group, Ashok tour and travels, Baba Shayam Travels, Babu Travels, Bhaiya Travels, Chanakya Travels Agency, Choudhary Holidays, Fouji travels Book Now
Boarding points in Noida
- ISBT Kashmiri Gate
- Karol Bagh
- Dhaula Kuan
- Mahipalpur
- MCD TOLL
- Mahadev Travels,Sankar Market, Tis Hazari Court, ShopNo-38-39, Gate No 5, Delhi
- Jhandewalan
- Pitampura
- Morigate
- SUNEHRI MASJID PARKING RED FORT
Dropping points in Dudu
- Dudu bypass
- DUDU
- BYPASS DUDU
- Dudu Bypass
- Dudu
- Dudu By Pass
- By pass, dudu
- Station Road
- BYPASS
- DUDU BY PASS
Top routes from Noida
- Noida to Lucknow Bus
- Noida to Dehradun Bus
- Noida to Agra Bus
- Noida to Kanpur Bus
- Noida to Varanasi Bus
- Noida to Rishikesh Bus
- Noida to Gorakhpur Bus
- Noida to Haridwar Bus
- Noida to Jaipur Bus
- Noida to Azamgarh Bus
- Noida to Allahabad Bus
- Noida to Vrindavan Bus
- Noida to Haldwani Bus
- Noida to Chandigarh Bus
- Noida to Khatushyamji Bus
- Noida to Roorkee Bus
- Noida to Nainital Bus
- Noida to Raebareli Bus
- Noida to Ayodhya Bus
- Noida to Mussoorie Bus
- Noida to Basti Bus
- Noida to Deoria Bus
- Noida to Auraiya Bus
- Noida to Aligarh Bus
- Noida to Ujjain Bus
- Noida to Sultanpur (Uttar Pradesh) Bus
- Noida to Mau Bus
- Noida to Amritsar Bus
- Noida to Jaunpur Bus
- Noida to Mathura Bus
- Noida to Khurja Bus
- Noida to Manali Bus
- Noida to Khalilabad Bus
- Noida to Sonipat Bus
- Noida to Mandi(Himachal Pradesh) Bus
- Noida to Kullu Bus
- Noida to Bhuntar Bus
- Noida to Delhi Bus
- Noida to Faridabad Bus
- Noida to Barabanki Bus
- Noida to Dudu Bus
Top routes to Noida
- Lucknow to Noida Bus
- Dehradun to Noida Bus
- Agra to Noida Bus
- Kanpur to Noida Bus
- Rishikesh to Noida Bus
- Jaipur to Noida Bus
- Gorakhpur to Noida Bus
- Varanasi to Noida Bus
- Haridwar to Noida Bus
- Allahabad to Noida Bus
- Haldwani to Noida Bus
- Azamgarh to Noida Bus
- Aligarh to Noida Bus
- Roorkee to Noida Bus
- Nainital to Noida Bus
- Vrindavan to Noida Bus
- Chandigarh to Noida Bus
- Khatushyamji to Noida Bus
- Indore to Noida Bus
- Basti to Noida Bus
- Raebareli to Noida Bus
- Ayodhya to Noida Bus
- Rudrapur to Noida Bus
- Jaunpur to Noida Bus
- Gwalior to Noida Bus
- Mussoorie to Noida Bus
- Mau to Noida Bus
- Deoria to Noida Bus
- Sultanpur (Uttar Pradesh) to Noida Bus
- Mathura to Noida Bus
- Mandi(Himachal Pradesh) to Noida Bus
- Khalilabad to Noida Bus
- Kullu to Noida Bus
- Bhuntar to Noida Bus
- Aut to Noida Bus
- Faridabad to Noida Bus
- Khurja to Noida Bus
- Moradabad to Noida Bus
- Barabanki to Noida Bus
- Jammu to Noida Bus
Top routes to Dudu
- Delhi to Dudu Bus
- Ahmedabad to Dudu Bus
- Radhanpur to Dudu Bus
- Surat to Dudu Bus
- Palanpur to Dudu Bus
- Jaipur to Dudu Bus
- Ajmer to Dudu Bus
- Kishangarh to Dudu Bus
- Beawer to Dudu Bus
- Udaipur to Dudu Bus
- Bhilwara to Dudu Bus
- Nathdwara to Dudu Bus
- Dausa to Dudu Bus
- Gurgaon to Dudu Bus
- Pali to Dudu Bus
- Bagru to Dudu Bus
- Himmatnagar to Dudu Bus
- Sojat to Dudu Bus
- Jodhpur to Dudu Bus
- Kankroli to Dudu Bus
- Sanderao to Dudu Bus
- Shamlaji to Dudu Bus
- Abu Road to Dudu Bus
- Kherwara to Dudu Bus
- Bharatpur to Dudu Bus
- Noida to Dudu Bus
- Kalol to Dudu Bus
- Gangapur(Rajasthan) to Dudu Bus
- Mehsana to Dudu Bus
- Sirohi to Dudu Bus
- Lucknow to Dudu Bus
- Chhapi to Dudu Bus
- Neemrana to Dudu Bus
- Dharuhera to Dudu Bus
- Kamlighat to Dudu Bus
- Bichhiwara to Dudu Bus
- Chomu to Dudu Bus
- Nimbahera to Dudu Bus
- Bar to Dudu Bus
- Shahpura to Dudu Bus
Top routes from Dudu
- Dudu to Ahmedabad Bus
- Dudu to Jodhpur Bus
- Dudu to Haridwar Bus
- Dudu to Kathgodam Bus
- Dudu to Surat Bus
- Dudu to Gurgaon Bus
- Dudu to Rajsamand Bus
- Dudu to Vadodara Bus
- Dudu to Indore Bus
- Dudu to Bhuj Bus
- Dudu to Jaipur Bus
- Dudu to Ajmer Bus
- Dudu to Kishangarh Bus
- Dudu to Beawer Bus
- Dudu to Udaipur Bus
- Dudu to Nathdwara Bus
- Dudu to Bhilwara Bus
- Dudu to Delhi Bus
- Dudu to Dausa Bus
- Dudu to Kherwara Bus
- Dudu to Bagru Bus
- Dudu to Shamlaji Bus
- Dudu to Bharatpur Bus
- Dudu to Himmatnagar Bus
- Dudu to Muzaffarnagar Bus
- Dudu to Sojat Bus
- Dudu to Pali Bus
- Dudu to Agra Bus
- Dudu to Kotputli Bus
- Dudu to Meerut Bus
- Dudu to Bichhiwara Bus
- Dudu to Kalol Bus
- Dudu to Ankleshwar Bus
- Dudu to Bharuch Bus
- Dudu to Shahpura Bus
- Dudu to Pushkar Bus
- Dudu to Chomu Bus
- Dudu to Pindwara Bus
- Dudu to Kamlighat Bus
- Dudu to Behror (Rajasthan) Bus
- Dudu to Noida Bus
Popular cities near Noida
- Agra Bus
- Mathura Bus
- Meerut Bus
- Sikandrabad Bus
- Ambala Bus
- Roorkee Bus
- Ghaziabad Bus
- Karnal Bus
- Gurgaon Bus
- Haridwar Bus
- Muzaffarnagar Bus
- Mohali Bus
- Panipat Bus
- Panchkula Bus
- Kurukshetra Bus
- Moradabad Bus
- Chandigarh Bus
- Khurja Bus
- Aligarh Bus
- Zirakpur(Punjab) Bus
- Sonipat Bus
- Rishikesh Bus
- Delhi Bus
- Faridabad Bus
- Vrindavan Bus
- Rampur (Uttar Pradesh) Bus
- Murthal Bus
- Etawah Bus
Popular cities near Dudu
- Jaipur Bus
- Ajmer Bus
- Kishangarh Bus
- Beawer Bus
- Bhilwara Bus
- Dausa Bus
- Bagru Bus
- Kotputli Bus
- Gulabpura(Rajasthan) Bus
- Sojat Bus
- Mehandipur Balaji Temple Bus
- Bandanwara Bus
- Raila Bus
- Pali Bus
- Bijainagar Bus
- Gangapur(Rajasthan) Bus
- Ringas Bus
- Jaitaran Bus
- Shahpura Bus
- Neemrana Bus
- Pushkar Bus
- Chomu Bus
- Nathdwara Bus
- Kankroli Bus
- Sanderao Bus
- Chittaurgarh Bus
- Bharatpur Bus
- Behror (Rajasthan) Bus
- Kamlighat Bus
- Sikandra Bus
Top Bus Operators Between Noida and Dudu
- Mahadev Travels JOD Bus
- VIKAS TRAVELS ® Bus
- GUJARAT TRAVELS Bus
- Hari Das Tour &Travels Bus
- Babu Travels Bus
- Chanakya Travels Agency Bus
- Ravina Travels (Regd) Bus
- REDIGO BUS
- ROYAL RIDE EXPRESS Bus
- OJAS TOUR AND TRAVEL Bus
- Surya Trans India Bus
- Ashok tour and travels Bus
- Ravina Travels (Regd) Bus
- Shri Ganesh Travells (SR Siyol) Bus
- Ram Dalal Holidays Pvt Ltd Bus
- VISHWAKARMA NIRMAN TRAVELS Bus
- Ajay Travels Neemuch Bus
- Naveen Tour and Travels Bus
- BHAGWATI TRAVELS EXPRESS Bus
- Gajraj bus service Bus
- Ashok Travels Mandsaur Group Bus
- Tejas Travels Bus
- VGO Bus
- Anshi Raj Shree Travels Bus
- Thar Bus Service Bus
- Choudhary Holidays Bus
- Shekhar Travels Bus
- OurBus India Limited Bus
- Satguru Tours & Travels Bus
- Mahaveer Travels® (M.T.A) Bus
- SHAGUN CARGO & TRAVELS Bus
- Jain Travels Dekho India Dekho Bus
- Chandra Raj Travels Bus
- Jay shri Shyam Travels And Logistics Bus
- Rishabh travels Bus
- PAL BUS(Patel Travels®) Bus
- NS Travels Bus
- Shri Krishna Travels ( Jai Shree Ganesh Yatra Co.) Bus
- Shree Karni Travels Agency Bus
- bhaiya travels Bus
- Fouji travels Bus
- Ravi Multani Sona Bus
- Shri Shivaay Travels Bus
- MY MY Travels Bus
- Globehopper Mobility Bus
- NAVEEN TRAVELS Bus
- Jain travels regd Bus
- Suryavanshi travel Bus
- Surya Trans India Bus
- Rajdhani Travels Bus
- Bhaiya Travels Bus
- Maharani Travels Bus
- Jakhar Travels Bus
- Kalpana Travels Pvt. Ltd. Bus
- Shri krishna Tour and Travels Bus
- Ankit Travels Bus
- PAL Travel Lines Bus
- Baba Shayam Travels Bus
- Gayatri Travels Bus
- Shri Mehandipur Balaji Travels Bus
- Nirman Travels Bus
- Western Bus Regd Bus
- UPSRTC Bus
- RSRTC Bus
Top Bus Operators from Noida
- Noida to Agra NueGo Bus
- Noida to Lucknow Laxmi holidays Bus
- Noida to Dehradun NueGo Bus
- Noida to Kanpur IntrCity SmartBus Bus
- Noida to Jaipur LEAFYMOBILITY PRIVATE LIMITED Bus
- Noida to Rishikesh LEAFYMOBILITY PRIVATE LIMITED Bus
- Noida to Vrindavan NueGo Bus
- Noida to Gorakhpur Laxmi holidays Bus
- Noida to Azamgarh FLIXBUS Bus
- Noida to Haridwar LEAFYMOBILITY PRIVATE LIMITED Bus
- Noida to Varanasi Laxmi holidays Bus
Top Bus Operators to Dudu
Hotels in Noida
AC Semi-Sleeper Bus from Noida
- Noida to Lucknow AC Semi-Sleeper Bus
- Noida to Dehradun AC Semi-Sleeper Bus
- Noida to Agra AC Semi-Sleeper Bus
- Noida to Kanpur AC Semi-Sleeper Bus
- Noida to Varanasi AC Semi-Sleeper Bus
- Noida to Rishikesh AC Semi-Sleeper Bus
- Noida to Gorakhpur AC Semi-Sleeper Bus
- Noida to Haridwar AC Semi-Sleeper Bus
- Noida to Jaipur AC Semi-Sleeper Bus
- Noida to Azamgarh AC Semi-Sleeper Bus
- Noida to Allahabad AC Semi-Sleeper Bus
- Noida to Vrindavan AC Semi-Sleeper Bus
- Noida to Haldwani AC Semi-Sleeper Bus
- Noida to Chandigarh AC Semi-Sleeper Bus
- Noida to Khatushyamji AC Semi-Sleeper Bus
- Noida to Roorkee AC Semi-Sleeper Bus
- Noida to Nainital AC Semi-Sleeper Bus
- Noida to Raebareli AC Semi-Sleeper Bus
- Noida to Ayodhya AC Semi-Sleeper Bus
- Noida to Mussoorie AC Semi-Sleeper Bus
- Noida to Basti AC Semi-Sleeper Bus
- Noida to Deoria AC Semi-Sleeper Bus
- Noida to Auraiya AC Semi-Sleeper Bus
- Noida to Aligarh AC Semi-Sleeper Bus
- Noida to Ujjain AC Semi-Sleeper Bus
- Noida to Sultanpur (Uttar Pradesh) AC Semi-Sleeper Bus
- Noida to Mau AC Semi-Sleeper Bus
- Noida to Amritsar AC Semi-Sleeper Bus
- Noida to Jaunpur AC Semi-Sleeper Bus
- Noida to Mathura AC Semi-Sleeper Bus
- Noida to Khurja AC Semi-Sleeper Bus
- Noida to Manali AC Semi-Sleeper Bus
- Noida to Khalilabad AC Semi-Sleeper Bus
- Noida to Sonipat AC Semi-Sleeper Bus
- Noida to Mandi(Himachal Pradesh) AC Semi-Sleeper Bus
- Noida to Kullu AC Semi-Sleeper Bus
- Noida to Bhuntar AC Semi-Sleeper Bus
- Noida to Delhi AC Semi-Sleeper Bus
- Noida to Faridabad AC Semi-Sleeper Bus
- Noida to Barabanki AC Semi-Sleeper Bus
AC Semi-Sleeper Bus to Dudu
- Delhi to Dudu AC Semi-Sleeper Bus
- Ahmedabad to Dudu AC Semi-Sleeper Bus
- Radhanpur to Dudu AC Semi-Sleeper Bus
- Surat to Dudu AC Semi-Sleeper Bus
- Palanpur to Dudu AC Semi-Sleeper Bus
- Jaipur to Dudu AC Semi-Sleeper Bus
- Ajmer to Dudu AC Semi-Sleeper Bus
- Kishangarh to Dudu AC Semi-Sleeper Bus
- Beawer to Dudu AC Semi-Sleeper Bus
- Udaipur to Dudu AC Semi-Sleeper Bus
- Bhilwara to Dudu AC Semi-Sleeper Bus
- Nathdwara to Dudu AC Semi-Sleeper Bus
- Dausa to Dudu AC Semi-Sleeper Bus
- Gurgaon to Dudu AC Semi-Sleeper Bus
- Pali to Dudu AC Semi-Sleeper Bus
- Bagru to Dudu AC Semi-Sleeper Bus
- Himmatnagar to Dudu AC Semi-Sleeper Bus
- Sojat to Dudu AC Semi-Sleeper Bus
- Jodhpur to Dudu AC Semi-Sleeper Bus
- Kankroli to Dudu AC Semi-Sleeper Bus
- Sanderao to Dudu AC Semi-Sleeper Bus
- Shamlaji to Dudu AC Semi-Sleeper Bus
- Abu Road to Dudu AC Semi-Sleeper Bus
- Kherwara to Dudu AC Semi-Sleeper Bus
- Bharatpur to Dudu AC Semi-Sleeper Bus
- Kalol to Dudu AC Semi-Sleeper Bus
- Gangapur(Rajasthan) to Dudu AC Semi-Sleeper Bus
- Mehsana to Dudu AC Semi-Sleeper Bus
- Sirohi to Dudu AC Semi-Sleeper Bus
- Lucknow to Dudu AC Semi-Sleeper Bus
- Chhapi to Dudu AC Semi-Sleeper Bus
- Neemrana to Dudu AC Semi-Sleeper Bus
- Dharuhera to Dudu AC Semi-Sleeper Bus
- Kamlighat to Dudu AC Semi-Sleeper Bus
- Bichhiwara to Dudu AC Semi-Sleeper Bus
- Chomu to Dudu AC Semi-Sleeper Bus
- Nimbahera to Dudu AC Semi-Sleeper Bus
- Bar to Dudu AC Semi-Sleeper Bus
- Shahpura to Dudu AC Semi-Sleeper Bus
Popular Volvo City Buses
- Sirohi Volvo Bus
- Kanpur Volvo Bus
- Jaipur Volvo Bus
- Manali Volvo Bus
- Ankleshwar Volvo Bus
- Udaipur Volvo Bus
- Chomu Volvo Bus
- Haldwani Volvo Bus
- Dudu Volvo Bus
- Bharatpur Volvo Bus
- Sanderao Volvo Bus
- Auraiya Volvo Bus
- Nathdwara Volvo Bus
- Haridwar Volvo Bus
- Azamgarh Volvo Bus
- Bhuntar Volvo Bus
- Neemrana Volvo Bus
- Roorkee Volvo Bus
- Raebareli Volvo Bus
- Sonipat Volvo Bus
- Radhanpur Volvo Bus
- Shahpura Volvo Bus
- Vadodara Volvo Bus
- Mau Volvo Bus
- Kherwara Volvo Bus
- Khalilabad Volvo Bus
- Dehradun Volvo Bus
- Lucknow Volvo Bus
- Mathura Volvo Bus
- Delhi Volvo Bus
- Meerut Volvo Bus
- Gorakhpur Volvo Bus
- Ujjain Volvo Bus
- Allahabad Volvo Bus
- Kamlighat Volvo Bus
- Pindwara Volvo Bus
- Agra Volvo Bus
- Aligarh Volvo Bus
- Varanasi Volvo Bus
- Deoria Volvo Bus
- Khatushyamji Volvo Bus
- Mussoorie Volvo Bus
- Moradabad Volvo Bus
- Dausa Volvo Bus
- Bagru Volvo Bus
- Dharuhera Volvo Bus
- Chandigarh Volvo Bus
- Shamlaji Volvo Bus
- Basti Volvo Bus
- Beawer Volvo Bus
- Kathgodam Volvo Bus
- Kishangarh Volvo Bus
- Behror (Rajasthan) Volvo Bus
- Kankroli Volvo Bus
- Jaunpur Volvo Bus
- Jodhpur Volvo Bus
- Indore Volvo Bus
- Gwalior Volvo Bus
- Pushkar Volvo Bus
- Nainital Volvo Bus
- Bhilwara Volvo Bus
- Gangapur(Rajasthan) Volvo Bus
- Ajmer Volvo Bus
- Noida Volvo Bus
- Jammu Volvo Bus
- Barabanki Volvo Bus
- Bhuj Volvo Bus
- Sultanpur (Uttar Pradesh) Volvo Bus
- Kullu Volvo Bus
- Abu Road Volvo Bus
- Palanpur Volvo Bus
- Rajsamand Volvo Bus
- Aut Volvo Bus
- Gurgaon Volvo Bus
- Pali Volvo Bus
- Kalol Volvo Bus
- Muzaffarnagar Volvo Bus
- Mandi(Himachal Pradesh) Volvo Bus
- Bichhiwara Volvo Bus
- Khurja Volvo Bus
- Ayodhya Volvo Bus
- Chhapi Volvo Bus
- Faridabad Volvo Bus
- Bar Volvo Bus
- Sojat Volvo Bus
- Ahmedabad Volvo Bus
- Mehsana Volvo Bus
- Bharuch Volvo Bus
- Nimbahera Volvo Bus
- Surat Volvo Bus
- Kotputli Volvo Bus
- Vrindavan Volvo Bus
- Himmatnagar Volvo Bus
- Rishikesh Volvo Bus
- Rudrapur Volvo Bus
- Amritsar Volvo Bus