Best travel time for this section and reasons:
Karnataka's PWD conducted a road usage survey in 2010. This was a part of a study to get a loan from Asian Development Bank for a project to construct a 22 km road through the Ghats. We will discuss this later.
Interesting Numbers
The percentage of passenger cars, buses, light commercial vehicles and heavy commercial vehicles (trucks, bullet shaped gas carrying trailers and ore (besides iron) carrying multi-axle vehicles) were 40%, 20%, 10% and 25%, respectively, of the traffic volume.
So, 20+10+25 =~60. Thus, commercial vehicles are 60% of the traffic volume.
The "core Ghats" section of Shiradi is ~30 km. Its total length is ~50 km. This 30 km section has many hairpin turns and long, steep gradient curves. The average speed of the commercial V's is 10 km/h.
Regular drivers may know already that the overall traffic peaks at three nasty hours - 10:00 am in the morning, 15:00 pm noon and 17:00 hours in the evening.
There is a simple reason for the peaks. Most buses and trucks going from Mangalore to Bangalore are fully loaded.
The main players on the Ghats - Chasing each other at 10 km/h
For those unfamiliar with this, imagine a convoy of gas carrying bullet trailer trucks behind fully loaded passenger buses carrying a uniformly loaded 6 feet height of parcels and boxes all along on their rooftop.
These will be seen trailing a TATA 407 loaded with fresh fish (for me) headed to Bangalore. The 407's are turbo charged. Hence, a good driver can make good time and reach Blr. so that the fish will not have died in vain.
Naturally, TATA LPT 1610's with colorful "Punjab" bodies carrying logs of wood are also determined to conquer the Ghats. It is actually just 2-3 huge logs. Maybe 200-300 year old trees.
Business Reasons for Traffic Jams
These commercial V's time their departure to a business dependent time of arrival in Bangalore.
Approx. 70% of buses travel in this section during the night and early morning hours (between 19:00 hours and 7:00 hours) in both directions. The day busses are, usually state owned carriers, charters, and the odd private ones. I think Durgamba and CPC travels have a day trip.
The volume of the Mangalore-bound traffic is larger in the morning and the volume of Bangalore-bound traffic is larger in the afternoon.
Therefore, for a comfortable BLR to MLR drive you may leave by 5 am. Avg. 60 km/h. Reach by 12 noon. You may stop once or twice to water the plants. If possible, do not waste too much time eating breakfast and lunch. There is enough variety in MLR. You already knew this. Now you have the statistics that prove you were 100% right.
A breath-taking vision
If you leave BLR at 11:30 pm, chase down the last departing bus in peak summer, and reach the Ghats by 3.30 - 4 am, you may see some spectacular rings of fire like a laurel around a few peaks. Forest fires.
I have seen this only twice in these few years. I have not taken any photos of these. It is just my personal thing. Nobody else is interested. It is IMHO, controlled fires by the forest dept. as it rarely burns below a certain height. However, the ones in April 2016 seem to have caused a bit of damage.
Anyhow, this post is about the road and proposed changes. The fire is a different topic.
What is going to built someday
The proposed new road is a 22 km stretch between Maranhalli and Gundya. Frankly, I had not heard of Maranhali until now. In some places, it is spelt as Masnahalli too. The images below explain better.
- The first image is the section of the Ghats, the metaphorical 10,000 feet view of the location of this bypass road.
- The second image is a satellite view of the same, closer. It will be a brown desert after this road is built.
- The third image shows two alternate routes considered by the survey team and their comments.
- The last image is a crude image showing six tunnels and five bridges joining those two places.
You may also go through the 300-page project report of this same road here:
http://www.meti.go.jp/meti_lib/report/2015fy/000469.pdf