Category benchmark · Snapshot 23 October 2026

Trains & Public Transport: website readiness

31 configuration checks across 203 Trains & Public Transport sites from the SID website catalog, with 127 individual profiles for sites in the Chrome UX Report top 50K.

Sites measured: 203
Median readiness index: 60/100
Profiles: 127
Weakest lane: Recover

Readiness by lane

Enable

73/100

All sites 77

Harden

57/100

All sites 56

Accelerate

53/100

All sites 64

Recover

15/100

All sites 10

Biggest gaps for Trains & Public Transport sites

The checks with the most room to improve, weighted by impact.

Modern image formats in use
28% observed · all sites 40%
Serve WebP or AVIF with a JPEG or PNG fallback, either through an image CDN or by generating both formats at build time.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format
HSTS kept for at least a year
41% observed · all sites 34%
Send Strict-Transport-Security on HTTPS responses. Start with a short max-age (for example 300 seconds), confirm every subdomain works over HTTPS, then raise it in steps to 31536000. Add includeSubDomains only when all subdomains are HTTPS. HSTS preload is optional and hard to undo; hstspreload.org itself does not recommend it by default.
Guide: HTTPS and TLS Guide for Website Owners
Static files cached for 30 days or more
38% observed · all sites 51%
Give versioned (fingerprinted) CSS, JavaScript, fonts and images Cache-Control: public, max-age=31536000, immutable, and change the file name whenever the content changes.
Guide: Browser Caching Guide for Website Owners
CAA records limit who can issue certificates
8.9% observed · all sites 13%
Publish CAA records naming every CA you actually use, including the CAs your CDN uses for managed certificates. Add an iodef contact if you want reports.
Guide: HTTPS and TLS Guide for Website Owners
security.txt published
9.5% observed · all sites 7.1%
Publish /.well-known/security.txt with at least Contact and Expires fields, as RFC 9116 requires, and review it before it expires.
Guide: A Practical Website Health Check for Owners
DMARC policy enforces quarantine or reject
40% observed · all sites 39%
Publish DMARC with p=none and a reporting address first, fix any legitimate senders that fail SPF or DKIM alignment, then move to quarantine and finally reject.
Guide: A Practical Website Health Check for Owners

Where Trains & Public Transport sites lead

X-Content-Type-Options: nosniff55% observedall sites 48%
HSTS kept for at least a year41% observedall sites 34%
Referrer-Policy set29% observedall sites 24%
DNSSEC signed13% observedall sites 8%

Stack mix

CDN and edge

Platform or framework

DNS operator

Certificate authority

Readiness leaders

Trains & Public Transport sites in the top 50K with the highest share of observed practices (at least 26 of 31 checks measured). This lists only what we observed on 23 October 2026; owners can request a correction.

All 31 checks for Trains & Public Transport

Check	Lane	Observed	All sites	Measured
HTTP requests move to HTTPS	Harden	95%	91%	181
HSTS kept for at least a year	Harden	41%	34%	202
TLS 1.3 negotiated	Harden	85%	91%	202
Certificate has more than 14 days left	Harden	98%	99%	202
Certificate lifetime of 100 days or less	Harden	43%	67%	202
CAA records limit who can issue certificates	Harden	8.9%	13%	203
DNSSEC signed	Harden	13%	8%	202
security.txt published	Harden	9.5%	7.1%	199
DMARC policy enforces quarantine or reject	Harden	40%	39%	202
X-Content-Type-Options: nosniff	Harden	55%	48%	202
Framing restricted	Harden	55%	51%	202
Content Security Policy present	Harden	34%	32%	202
Referrer-Policy set	Harden	29%	24%	202
HTTP/2 negotiated	Accelerate	77%	90%	202
HTTP/3 advertised	Accelerate	28%	37%	202
HTML compressed	Accelerate	86%	93%	200
Static files cached for 30 days or more	Accelerate	38%	51%	176
Modern image formats in use	Accelerate	28%	40%	166
Offscreen images lazy-loaded	Accelerate	43%	62%	155
No render-blocking scripts in <head>	Accelerate	43%	48%	202
robots.txt published	Enable	81%	76%	196
XML sitemap discoverable	Enable	66%	70%	199
Reachable over IPv6	Enable	33%	48%	202
Canonical URL declared	Enable	62%	68%	202
Meta description written	Enable	82%	84%	202
Mobile viewport configured	Enable	95%	94%	202
Structured data present	Enable	33%	51%	202
Social preview image set	Enable	54%	57%	202
Page language declared	Enable	91%	90%	202
At most one redirect to the homepage	Enable	96%	98%	203
Nameservers spread across providers	Recover	15%	10%	202

Trains & Public Transport profiles

Readiness index shown next to each site.

Trains & Public Transport: website readiness

Readiness by lane

Biggest gaps for Trains & Public Transport sites

Modern image formats in use

HSTS kept for at least a year

Static files cached for 30 days or more

CAA records limit who can issue certificates

security.txt published

DMARC policy enforces quarantine or reject