A vendor safety questionnaire arrives from a client's procurement team. Somewhere on page three, between PPE stock and vehicle fitness certificates, there is a single line: describe your controls to prevent drivers operating vehicles under the influence of alcohol. There is a text box, and it needs a real answer.
Most transport and logistics operators in India discover the subject this way, or through an insurer's letter after a claim, rather than through a court. Driving under the influence stops being a road-safety slogan the moment someone external asks you to prove you manage it. This article is about answering that question honestly, and about the policy you need in place before the question is asked.
What driving under the influence means under Indian law
Indian law does not use the phrase "DUI" the way American reporting does. The operative provision is Section 185 of the Motor Vehicles Act, 1988, which covers driving by a person under the influence of drink or drugs.
The alcohol threshold in that section is 30 mg of alcohol per 100 ml of blood, detected by a breath analyser or in a laboratory test. That is roughly 0.03% BAC, and it is one of the stricter statutory limits in use anywhere. It is not a licence to drink up to it.
A few points that operators regularly get wrong:
• The section covers drink or drug. Alcohol is the easiest to screen for, not the only substance the law contemplates.
• Section 186 deals separately with driving when mentally or physically unfit to drive, which does not depend on a number at all.
• The Act empowers a police officer to require a breath test in defined circumstances, and refusing that test is itself treated as an offence.
• Penalties under Section 185, as amended by the Motor Vehicles (Amendment) Act, 2019, run to imprisonment and a substantial fine, with heavier consequences for a repeat offence within three years. Enforcement practice and state-level rules vary, so verify the current text before quoting figures in a policy document.
For a deeper treatment of the statutory position and how a reading is challenged, see driving under the influence of alcohol: the law, the test and the employer's exposure.
Who carries the consequence when screening is skipped
The driver carries the challan. Almost nobody else's exposure stops there.
The operator carries the civil claim, the client's contractual penalty, the loss of the route, and the awkward paragraph in the accident investigation that says no pre-trip fitness check existed. The transport manager or dispatcher carries the question of what they knew when they released the vehicle. The insurer looks closely at whether the loss arose from an act you could reasonably have prevented.
In practice, the most damaging finding is not that a driver was impaired. It is that nobody in the organisation had any way of knowing.
Why the legal limit is the wrong number for a workplace policy
Thirty milligrams per 100 ml is a prosecution threshold. It is not a definition of safe.
A driver at 25 mg/100 ml is legally clear and still slower to react than they were at zero. If you set your internal rule at the statutory limit, you are effectively telling drivers that a small amount before a shift is acceptable, and then relying on their arithmetic.
Most commercial fleets, mining contractors and hazardous-goods carriers in India therefore run a zero-tolerance internal standard: any detectable reading means the person does not drive, regardless of whether a court would convict. The policy question is what happens next, not what the number was. If you want to understand how readings map to impairment and to the statutory limit, what the reading actually means in India covers the interpretation side.
Where the risk actually sits in your operation
Driving under the influence is not only a long-haul truck problem. Look for the points where a person takes control of a vehicle without anyone seeing them first.
Setting Where the exposure sits
Logistics and fleet Night departures, driver changeovers at transhipment hubs, returning drivers taking a second trip
Construction and mining Tippers, loaders and light vehicles inside the site boundary, where public-road policing never reaches
Factories and warehouses Forklift and stacker operators, contract drivers arriving from outside the plant
Staff transport and school buses Contracted drivers you do not employ and cannot supervise directly
Hospitality and events Guests collecting their own cars, and the venue's own valet and shuttle drivers
Families The relative who insists they are fine to drive after a function
Each of these needs the same thing: a quick, dignified, repeatable check at the point where control of the vehicle changes hands.
What a workable policy looks like
A policy that survives an audit has five parts, and none of them is the device.
• A written standard. State the internal limit, state that it applies to anyone who drives on company business, and state that it applies to contractors and their drivers.
• A defined trigger. Random screening at dispatch, pre-shift screening for defined roles, post-incident screening, and for-cause screening where a supervisor records specific observations.
• A named tester and a fixed procedure. Same steps, same waiting period after the last drink or mouth rinse, same use of a fresh mouthpiece, every single time.
• A confirmation step. A second test after a stated interval on the same person, and a documented route to a laboratory test where the person disputes the result.
• A record. Date, time, device serial number, calibration date, reading, tester's name, driver's acknowledgement. Without this, a dismissal or a claim defence is built on memory.
The procedural detail matters more than most buyers expect. Procedure, records and defending a result sets out how a test is challenged and how the paperwork closes those gaps.
The conversation at the vehicle
Decide in advance what a positive reading means operationally. The driver does not drive. The load is reassigned. Someone arranges for the person to get home safely rather than sending them off on a two-wheeler. Discipline follows separately, through your HR process, on the strength of the record.
The fastest way to kill a screening programme is to make the first positive result a public humiliation. Test privately, speak quietly, and be consistent.
The device that fits the job
Once the policy exists, the equipment choice is straightforward.
• Non-contact or passive screeners suit high-volume gates and event doors where you need a fast pass or fail on hundreds of people.
• Fuel-cell sensor units with mouthpieces suit fleets and industrial sites, because they are specific to ethanol and hold accuracy across repeated tests.
• Printer-enabled or data-logging units suit any operation where the record has to leave the site and go into a file.
Do not buy on sensor claims alone. Ask about calibration interval, who performs the calibration, turnaround time, and mouthpiece supply, because those recurring items decide whether the programme still runs in year three. The real cost of owning one and what decides the number on the quote both deal with this properly.
If you are searching locally, resist the pull of convenience. Buying the right one rather than the nearest one explains why proximity is the weakest selection criterion for a device that needs annual service. Venues with a door and an exit to manage should start with duty of care at the door instead.
For families, the same logic applies
A household does not need a policy document. It needs one device in the glovebox or by the front door, and one agreed rule: if the reading is above zero, the keys go to someone else.
That rule is easier to enforce with a number on a screen than with an argument about whether two drinks over four hours counts. The awkwardness of the test is smaller than the awkwardness of everything that follows a crash.
The decision in front of you
Routine alcohol screening is now ordinary. Clients ask about it, insurers assume it, and site audits look for the records. If the box on that questionnaire is still empty, the honest answer today is that you rely on the driver's judgement and on the traffic police.
That answer is a decision, whether or not it was made deliberately. The alternative is a written standard, a trained tester, a calibrated device and a file of records. It is a week of work, and it changes who carries the consequence.