Questions tagged [transportation]
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70 questions
0 votes
1 answer
106 views
What is the most efficient way to transport large quantities of rock over long distances?
I'm working on a project that requires moving massive amounts of rock (e.g., mining, construction, or quarrying operations). The goal is to determine the most efficient transportation method in terms ...
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-4 votes
1 answer
60 views
CCTV systems implementation in Cable Cars / Gondolas [closed]
Is it feasible to implement CCTV systems in Cable Cars / Gondolas?
0 votes
1 answer
140 views
Cable-car to cross urban obstacles (roads, highways, railways) that hinder bus or cars are featured very favorably here. What are their drawbacks?
I've red an article on Le Journal du Grand Paris that depicts a cable-car in Île-de-France going from Créteil to Villeneuve-Saint-Georges in 2025. the cities crossed have 20,000 inhabitants together ...
- 103
0 votes
1 answer
81 views
How do I build an ocean train?
I want to build an train that goes across the ocean and water bodies. So far I have created the perfect design. It also is affordable. Specifications: Two tracks of empty water barrels would connect ...
- 229
0 votes
0 answers
36 views
Insight on site geometrics for collisions
I’m analyzing safety issues along New Street in Burlington, Ontario, and have identified several locations with high collision rates. Here are the details: ...
- 1
0 votes
0 answers
44 views
Estimate AADT from 15 minutes video data
I have collected 15 minutes of traffic volume count data at peak hour with different locations along a two-directional highway. I want to calculate the Average Annual Daily Traffic (AADT). What is the ...
- 1
0 votes
2 answers
142 views
Did anyone ever make training wheels for the original Segway personal transporter device?
I am curious to know if Segway, or any other company, has ever made front and rear training wheels for the original version of the Segway personal transporter device. To help illustrate what I mean by ...
user33377
2 votes
0 answers
96 views
Theory of rotationally symmetric air cushion vehicle
I am trying to develop a theory for this situation: A small blown-up balloon is attached to the center of a compact disc; you let it float as the balloon discharges. Simplifying assumptions: ...
- 21
0 votes
3 answers
169 views
I don't understand how the pneumatic control precession actuation on the Brennan Monorail's gyros further balances the vehicle
I linked a YouTube video from Primal Space, The Self Balancing Monorail, discussing how the Brennan Monorail works. @6:40 timestamp the narrator explains how the pneumatic pressure "[pushes] the ...
1 vote
0 answers
81 views
What is the fastest way to move a 720 ton statue for a distance of 500 km from Cairo to Luxor with modern technology?
The ancient egyptians could do it but we don't know how long it took them. What would be the fastest way to do it with modern technology? How long would it take? https://en.wikipedia.org/wiki/...
- 121
0 votes
1 answer
767 views
The heaviest road-legal truck
The question is what is the heaviest road-legal truck? I exclude road trains (except for one full trailer in addition to regular load) and special payloads (such as wind turbines, very large ...
- 235
2 votes
2 answers
377 views
Why are expansion joints on prestressed concrete box girder bridges sometimes not located directly above the bridge piers?
Here is an example of what I am referring to. This bridge is part of the Tom Moreland Interchange in Atlanta, more commonly known as "Spaghetti Junction". This interchange has several ...
- 171
0 votes
1 answer
130 views
speed-density relationship transportation question
I have the following questions: Would the capacity be the area under the curve? Or can I use this formula: $q_c = \frac{k_j \times v_f}{4}$ from the greenshields model, where the capacity flow is ...
- 286
0 votes
0 answers
24 views
Why can't the 'special values' in the transportation fundamental diagrams always be determined?
Why can't the 'special values' in the transportation fundamental diagrams always be determined? For example: Why can't I always determine the Free-flow speed (𝑣A), Capacity (𝑞B), Critical density (�...
- 286
0 votes
2 answers
387 views
Which is fuel efficient, roadways transport vs waterways transport? [closed]
Which will be more efficient in term of fuel price: Transport via roadways, say truck or motor vehicle. Transport via waterways, say via ship or motor boat. Assumptions: Same caliber engines (same ...
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